Lenis = Lang (L=L)

Syllable final Lenis obstruent = Lang
Syllable final Fortis obstruent = Kort

(Engels Ezelsbruggetje voor Pre-fortis Clipping:

Pre=before
Fortis=voiceless
Clipping=shortening:
If vowels (klinkers) and/or sonorants come before a voiceless consonant in same syllable, they become shorter in duration. As in 'sauce' or 'spent'.).