Wordbuilder

How many words of three or more letters, including plurals, can you make

only once? No words beginning with a capital are allowed. There’s at least one

Good 7 Very Good 10 Excellent 12

Previous solution: amp, amps, apt, asp, ats, map, maps, mast, mat, mats, pas, past, pat, pats, samp, sap, sat, spa, spam, spat, stamp, tam, tamp, tamps, tams, tap, taps