Please read the following table in Markdown format and then answer the question according to the table. Table cells in one row are seperated by '|', and different rows are seperated by '
'.

Table:
| Proto-Germanic | West Germanic | Old English | German | Dutch |
| --- | --- | --- | --- | --- |
| *þ | *[þ] | [θ] | /d/ | /d/ |
| *þ | *[đ] | [ð] | /d/ | /d/ |
| *đ | *d | /d/ | /t/ | /d/ |
| *đ | *d | /d/ | /t/ | /d/ |
| *t | *t | /t/ | /s/ or /ts/ | /t/ |
Question:
What's the Proto-Germanic when the Old English is /d/?
Answer:
*đ, *đ