How you rate: 13 words, average; 17, good; 21, very good; 26, excellent.
Source: the Times
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Answers on the continuation page.
eel, lee, leer, lei, leper, leu, lie, lieu, lip, lur, lure, peel, pele, peril, pile, plié, pul, pule, puli, purl, reel, repel, riel, rile, rule
puerile is the word using all the letters (which I didn’t get, Susan!)