Teng. beleriandic-mode grammar.

References ✧ PE22/030.0201; PE22/031.0101; PE22/031.0901; PE22/031.2701; PE22/031.3701; PE22/032.0101; PE22/032.0701; PE22/032.2001; PE22/032.3001; PE22/032.3601; PE22/033.0501