uv run tools/tokenizer/extend_bpe.py ^
    --base-model checkpoints/bpe.model ^
    --manifests dataset/thaitts_emilia_dataset/forbpe.jsonl ^
    --output-model checkpoints/thai3normalbpe.model ^
    --target-size 36000 ^
    --character-coverage 1.0 ^
    --model-type bpe