In the following dialogue, Sebbie (short for Sebastian) uses only the letters BEHILOSZ, and Amanda the remaining eighteen. (Why this choice of letters? My children showed me how 71077345 on a pocket calculator would spell ShELLOIL if turned upside down, and I ascertained that 8 and 2 also led to letters.) Because of the paucity of words spelled with these eight letters or the complement, I have taken certain orthographic liberties with their conversation, but it should not prove too hard to understand