3 letters:
ben, den, hen, jen, ken, len, men, pen, ren, sen, ten, wen, yen, zen

4 letters:
behn, benn, chan, chek, ches, chet, chez, chin, chon, chun, dehn, denn, fehn, fenn, hehn, henn, jenn, kehn, kenn, lehn, menn, penh, penn, rehn, renn, senn, shen, then, uren, venn, when, wren

5 letters:
behne, benne, chain, chair, check, chell, cheng, chern, chess, chinh, chinn, choon, chunn, churn, czech, dehne, denne, henne, jenne, kehne, lehne, menne, renne, senne, venne, wrenn, chien

6 letters:
cheane, chen's, cherne, cheyne