law train_wf
import bend-ml-bpe-tokenizer@0.1.3.0/main.bend as BendMlBpeTokenizerimport Base
639# LAW (train_wf): the table that train returns is always well formed, so the roundtrip holds for it
640law train_wf:
641 for n: Nat
642 for +next: Nat
643 for +xs: List<&2, Tk>
644 {True{} == wf(train(n, next, xs)) : Bool}