cool, coole, cooled, cools, kool

buhler, caler, caller, calor, caylor, coler, collar, coller, collor, color, coolers, cooley, coolly, coomer, cooner, cooper, cooter, coover, cougar, coulee, couper, cuellar, culler, curler, cuyler, kaehler, kahler, kaler, kaylor, keeler, kehler, keillor, kellar, keller, kielar, kieler, killer, koehler, koeller, kohler, kolar, kollar, koller, koogler, kooser, kuehler, kuhar, kuhner, kuiper, kula, kyler, pooler, ruler, schooler, schueler, schueller, schuler, schuller, shular, shuler, suhler, uhler, uhlir