EXAMPLE: Clue 1 might be BANA- and -TIER. The answer could be NAS because it forms BANA(NAS) and (NAS)TIER, two Scrabble-accepted words. Clue 2 might then be MARI- and -TLED. The answer would be NES, which forms MARI(NES) and (NES)TLED. The three-letter answers form a word ladder, in which one letter changes per step, but the same letter never changes twice in a row. So a sequence of answers might be NAS/NES/CES/CTS/etc. The ladder is cyclical in that the last word in the ladder can become the first word in just one step.