Based on teas, new words formed by adding one letter at the beginning or end:
b - aest c - abets d - baste e - bates f - beats g - betas h - tabes j - caste k - cates l - cesta m - taces n - dates o - sated p - stade r - stead s - tsade t - setae u - tease v - fates w - feast x - feats y - fetas z - gates
