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README.md
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<a href="https://github.com/SeaLLMs/SeaLLMs" target="_blank" rel="noopener">Github</a>
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</p>
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We introduce
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The [SeaLLM-chat](https://huggingface.co/spaces/SeaLLMs/SeaLLM-Chat-13b) model underwent supervised finetuning (SFT) on a mix of public instruction data (e.g. [OpenORCA](https://huggingface.co/datasets/Open-Orca/OpenOrca)) and a small
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Our customized SFT process helps enhance our models' ability to understand, respond and serve communities whose languages are often neglected by previous [English-dominant LLMs](https://arxiv.org/abs/2307.09288), while outperforming existing polyglot LLMs, like [BLOOM](https://arxiv.org/abs/2211.05100) or [PolyLM](https://arxiv.org/pdf/2307.06018.pdf).
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Our [first released SeaLLM](https://huggingface.co/spaces/SeaLLMs/SeaLLM-Chat-13b) supports Vietnamese ๐ป๐ณ, Indonesian
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- DEMO: [SeaLLMs/SeaLLM-Chat-13b](https://huggingface.co/spaces/SeaLLMs/SeaLLM-Chat-13b)
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- Model weights: To be released.
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- Technical report: To be released.
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<blockquote style="color:red">
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<p><strong style="color: red">Terms of Use</strong>: By using our released weights, codes and demos, you agree to and comply with the following terms and conditions:</p>
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<ul>
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<li>Follow LLama-2 <a rel="noopener nofollow" href="https://ai.meta.com/llama/license/">License</a> and <a rel="noopener nofollow" href="https://ai.meta.com/llama/use-policy/">Terms of Use</a>.</li>
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<li>Strictly comply with the local regulations from where you operate, and not attempt to generate or elicit content that
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</ul>
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</blockquote>
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> **Disclaimer**:
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> We must note that even though the weights, codes and demos are released in an open manner, similar to other pre-trained language models, and despite our best
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> Developers and stakeholders should perform their own red teaming and provide related security measures before deployment, and they must abide by and comply with local governance and regulations.
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> In no event shall the authors be held liable for any claim, damages, or other liability arising from the use of the released weights, codes or demos.
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> The logo was generated by DALL-E 3.
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## Pre-training
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### Vocabulary Expansion
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Like many English/Latin-dominant LLMs, Llama-2's BPE tokenizer breaks non-European and non-
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Our goal for vocabulary expansion is threefold: (1) the number of newly-added tokens must be minimal and only cover the new languages, (2) the tokens should bring the compression ratios of new languages close to that of English, and (3) minimize the disruption of existing European tokens to preserve Llama-2 knowledge. In the end, we obtain **~11K** new tokens for Vi, Id, Th and Zh to augment the original 32000-token vocabulary. Details of our expansion technique will be revealed in our upcoming technical report.
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As seen in the table below, our new vocabulary
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|Language | Llama's ratio | Our ratio | # New tokens
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| --- | --- | --- | --- |
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### Pre-training Strategies
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We conduct pre-training in 4 different stages. Each stage serves a different specific objective and involves dynamic control of (unsupervised and supervised) data mixture, as well as data specification and categorization. We also employ
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As our goal is for Llama-2 to learn new languages with the least number tokens and computing resources, we control an appropriate data mix of new (Vi, Id & Th) and old (En, Zh) languages so that the new vocabulary and knowledge are trained quickly, while relatively maintaining the performance of the original Llama-2 model and establishing a knowledge bridge between new and existing languages.
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We pre-train our SeaLLM-base in ~4 weeks on 32gpus, clocking ~150B tokens.
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Our supervised finetuning (SFT) data consists of many categories. The largest of them are public and open-source, such as [OpenORCA](https://huggingface.co/datasets/Open-Orca/OpenOrca) and [Platypus](https://huggingface.co/datasets/garage-bAInd/Open-Platypus). As the aforementioned are monolingual, we employ several established or novel automatic techniques to gather more instruction data for SEA languages.
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Even more noteworthy is that we engaged native speakers to collect a small
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### SFT Strategies
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### M3Exam - World Knowledge in Regional Languages
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[M3Exam](https://arxiv.org/pdf/2306.05179.pdf) is a collection of real-life and native official human exam
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As shown in the table, our SeaLLM model outperforms most 13B baselines and reaches closer to ChatGPT's performance. Notably, for Thai - a seemingly low-resource language, our model is just 1% behind ChatGPT despite the large size difference.
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For translation tasks, we evaluate our models with the [FloRes-200](https://github.com/facebookresearch/flores/blob/main/flores200/README.md) using [chrF++](https://aclanthology.org/W15-3049/) scores in 4-shot settings.
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Similarly observed, our SeaLLM models
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| FloRes-200 (chrF++) | En-Zh | En-Vi | En-Id | En-Th | En->X | Zh-En | Vi-En | Id-En | Th-En | X->En
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|-------- | ---- | ---- | ---- | ---- | ---- | ---- | ---- | ---- | ---- | ---- |
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| SeaLLM-13b-chat-v1 | 22.77 | 58.96 | 64.78 | 42.38 | 55.37 | 53.20 | 60.29 | 65.03 | 57.24 | 60.85
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| SeaLLM-13b-chat-v2 | 22.75 | 58.78 | 65.90 | 42.60 | 55.76 | 53.34 | 60.80 | 65.44 | 57.05 | 61.10
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Our models are also performing competitively with ChatGPT for translation between SEA languages without English
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| FloRes-200 (chrF++) | Vi-Id | Id-Vi | Vi-Th | Th-Vi | Id-Th | Th-Id
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|-------- | ---- | ---- | ---- | ---- | ---- | ---- |
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#### Summarization
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Lastly, in 2-shot [XL-sum summarization tasks](https://aclanthology.org/2021.findings-acl.413/), our models also achieve better performance, with substantial gains in Thai.
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| XL-Sum (rouge-L) | En | Zh | Vi | Id | Th
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|-------- | ---- | ---- | ---- | ---- | ---- |
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| Llama-2-13b-chat | 25.11 | 31.13 | 18.29 | 22.45 | 17.51
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| SeaLLM-13b-chat-v2 | 27.00 | 33.31 | 20.31 | 25.69 | 21.97
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## Citation
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<a href="https://github.com/SeaLLMs/SeaLLMs" target="_blank" rel="noopener">Github</a>
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</p>
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We introduce SeaLLMs - a family of language models optimized for Southeast Asian (SEA) languages. The SeaLLM-base models (to be released) were pre-trained from [Llama-2](https://huggingface.co/meta-llama/Llama-2-13b-hf), on a tailored publicly-available dataset, which comprises mainly Vietnamese ๐ป๐ณ, Indonesian ๐ฎ๐ฉ and Thai ๐น๐ญ texts, along with those in English ๐ฌ๐ง and Chinese ๐จ๐ณ. The pre-training stage involves multiple stages with dynamic data control to preserve the original knowledge base of Llama-2 while gaining new abilities in SEA languages.
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The [SeaLLM-chat](https://huggingface.co/spaces/SeaLLMs/SeaLLM-Chat-13b) model underwent supervised finetuning (SFT) on a mix of public instruction data (e.g. [OpenORCA](https://huggingface.co/datasets/Open-Orca/OpenOrca)) and a small number of queries used by SEA language native speakers in natural settings, which **adapt to the local cultural norms, customs, styles and laws in these areas**, as well as other SFT enhancement techniques (to be revealed later).
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Our customized SFT process helps enhance our models' ability to understand, respond, and serve communities whose languages are often neglected by previous [English-dominant LLMs](https://arxiv.org/abs/2307.09288), while outperforming existing polyglot LLMs, like [BLOOM](https://arxiv.org/abs/2211.05100) or [PolyLM](https://arxiv.org/pdf/2307.06018.pdf).
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Our [first released SeaLLM](https://huggingface.co/spaces/SeaLLMs/SeaLLM-Chat-13b) supports Vietnamese ๐ป๐ณ, Indonesian ๐ฎ๐ฉ, and Thai ๐น๐ญ. Future versions endeavor to cover all languages spoken in Southeast Asia.
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- DEMO: [SeaLLMs/SeaLLM-Chat-13b](https://huggingface.co/spaces/SeaLLMs/SeaLLM-Chat-13b)
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- Model weights: To be released.
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- Technical report: To be released.
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<blockquote style="color:red">
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<p><strong style="color: red">Terms of Use</strong>: By using our released weights, codes, and demos, you agree to and comply with the following terms and conditions:</p>
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<ul>
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<li>Follow LLama-2 <a rel="noopener nofollow" href="https://ai.meta.com/llama/license/">License</a> and <a rel="noopener nofollow" href="https://ai.meta.com/llama/use-policy/">Terms of Use</a>.</li>
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<li>Strictly comply with the local regulations from where you operate, and do not attempt to generate or elicit content that is locally or internationally illegal and inappropriate from our models.</li>
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</ul>
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</blockquote>
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> **Disclaimer**:
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> We must note that even though the weights, codes, and demos are released in an open manner, similar to other pre-trained language models, and despite our best efforts in red teaming and safety finetuning and enforcement, our models come with potential risks. These risks are influenced by various complex factors, including but not limited to over-diversified, inaccurate, misleading or potentially harmful generation.
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> Developers and stakeholders should perform their own red teaming and provide related security measures before deployment, and they must abide by and comply with local governance and regulations.
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> In no event shall the authors be held liable for any claim, damages, or other liability arising from the use of the released weights, codes, or demos.
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> The logo was generated by DALL-E 3.
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## Pre-training
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### Vocabulary Expansion
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Like many English/Latin-dominant LLMs, Llama-2's BPE tokenizer breaks non-European and non-Latin linguistic texts into unsustainably long byte-level sequences that cover much shorter semantic meanings, leading to [degraded performance](https://arxiv.org/abs/2306.11372). For instance, it takes 4.3x more tokens to encode the same sentence in Thai compared to that in English. This leads to the models failing to perform summarization and comprehension tasks without exceeding the context length.
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Our goal for vocabulary expansion is threefold: (1) the number of newly-added tokens must be minimal and only cover the new languages, (2) the tokens should bring the compression ratios of new languages close to that of English, and (3) minimize the disruption of existing European tokens to preserve Llama-2 knowledge. In the end, we obtain **~11K** new tokens for Vi, Id, Th, and Zh to augment the original 32000-token vocabulary. Details of our expansion technique will be revealed in our upcoming technical report.
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As seen in the table below, our new vocabulary reduces the compression ratio from 4.29 to 1.57 for Thai - meaning it can now encode 2.7x longer Thai text given the same context length. Meanwhile, English is only compressed by 0.3%, thus preserving its integrity.
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|Language | Llama's ratio | Our ratio | # New tokens
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| --- | --- | --- | --- |
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### Pre-training Strategies
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We conduct pre-training in 4 different stages. Each stage serves a different specific objective and involves dynamic control of (unsupervised and supervised) data mixture, as well as data specification and categorization. We also employ novel sequence construction and masking techniques during these stages. More details are to be provided in the technical report.
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As our goal is for Llama-2 to learn new languages with the least number of tokens and computing resources, we control an appropriate data mix of new (Vi, Id & Th) and old (En, Zh) languages so that the new vocabulary and knowledge are trained quickly, while relatively maintaining the performance of the original Llama-2 model and establishing a knowledge bridge between new and existing languages.
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We pre-train our SeaLLM-base in ~4 weeks on 32gpus, clocking ~150B tokens.
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Our supervised finetuning (SFT) data consists of many categories. The largest of them are public and open-source, such as [OpenORCA](https://huggingface.co/datasets/Open-Orca/OpenOrca) and [Platypus](https://huggingface.co/datasets/garage-bAInd/Open-Platypus). As the aforementioned are monolingual, we employ several established or novel automatic techniques to gather more instruction data for SEA languages.
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Even more noteworthy is that we engaged native speakers to collect a small number of queries used by SEA-language native speakers in natural settings, which helps in adaptation to the local cultural customs, norms, and laws. We also collect country-relevant safety data that cover many culturally and legally sensitive topics in each of these SEA countries - such data tend to be ignored, or may even appear in conflict with Western safety data. Therefore, we believe that our models are more local-friendly and abide by local rules to a higher degree.
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### SFT Strategies
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### M3Exam - World Knowledge in Regional Languages
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[M3Exam](https://arxiv.org/pdf/2306.05179.pdf) is a collection of real-life and native official human exam question benchmarks. This benchmark covers questions from multiple countries in the SEA region, which require strong multilingual proficiency and cultural knowledge across various critical educational periods, from primary- to high-school levels of difficulty.
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As shown in the table, our SeaLLM model outperforms most 13B baselines and reaches closer to ChatGPT's performance. Notably, for Thai - a seemingly low-resource language, our model is just 1% behind ChatGPT despite the large size difference.
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For translation tasks, we evaluate our models with the [FloRes-200](https://github.com/facebookresearch/flores/blob/main/flores200/README.md) using [chrF++](https://aclanthology.org/W15-3049/) scores in 4-shot settings.
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Similarly observed, our SeaLLM models outperform Llama-2 significantly in the new languages.
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| FloRes-200 (chrF++) | En-Zh | En-Vi | En-Id | En-Th | En->X | Zh-En | Vi-En | Id-En | Th-En | X->En
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|-------- | ---- | ---- | ---- | ---- | ---- | ---- | ---- | ---- | ---- | ---- |
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| SeaLLM-13b-chat-v1 | 22.77 | 58.96 | 64.78 | 42.38 | 55.37 | 53.20 | 60.29 | 65.03 | 57.24 | 60.85
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| SeaLLM-13b-chat-v2 | 22.75 | 58.78 | 65.90 | 42.60 | 55.76 | 53.34 | 60.80 | 65.44 | 57.05 | 61.10
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Our models are also performing competitively with ChatGPT for translation between SEA languages without English pivoting.
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| FloRes-200 (chrF++) | Vi-Id | Id-Vi | Vi-Th | Th-Vi | Id-Th | Th-Id
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|-------- | ---- | ---- | ---- | ---- | ---- | ---- |
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#### Summarization
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Lastly, in 2-shot [XL-sum summarization tasks](https://aclanthology.org/2021.findings-acl.413/), our models also achieve a better performance, with substantial gains in Thai.
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| XL-Sum (rouge-L) | En | Zh | Vi | Id | Th
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|-------- | ---- | ---- | ---- | ---- | ---- |
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| Llama-2-13b-chat | 25.11 | 31.13 | 18.29 | 22.45 | 17.51
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| SeaLLM-13b-chat-v2 | 27.00 | 33.31 | 20.31 | 25.69 | 21.97
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## Acknowledge our linguists
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## Citation
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