Based on sere, new words formed by adding one letter at the beginning or end:
a - eers b - erase c - saree d - beers e - ceres f - scree g - deers h - drees i - redes j - reeds k - seder l - sered m - resee n - feres o - frees p - reefs r - egers s - reges t - heres u - sheer v - siree w - jeers x - esker y - reeks
