List A: hill, fell, bell, doll, pill, grill, windmill

List B: yawn, hawk, crawl, claw, ball, salt, small, wall

List C: base, din, discard, dome, gallon, instrument, luxury, mallet, skill, slight

List D: apparent, ban, concentrate, concern, consider, contrast, fragile, menace, pounce, prompt, recent, symbol, talon, trophy, widespread