special_tokens_map.json

{
  "additional_special_tokens": [
    "<fitm_start>",
    "<multiple_tok_mask>",
    "<fitm_result>",
    "<causal>",
    "<mlm_start>",
    "<single_tok_mask>",
    "<mlm_end>"
  ],
  "bos_token": "<|endoftext|>",
  "eos_token": "<|endoftext|>",
  "pad_token": "<|endoftext|>",
  "unk_token": "<|endoftext|>"
}