special_tokens_map.json

{
  "additional_special_tokens": [
    "S",
    "U",
    "D",
    "SU",
    "ACK",
    "M",
    "QYN",
    "QWH",
    "AYN",
    "AWH",
    "FP",
    "FNON",
    "O"
  ],
  "eos_token": "<|endoftext|>"
}