das, nasty, lasso, cascade, case, casement, cash, cashew, cashier, cashmere, casing, casino, cask, casket, cassava, casserole, cassette, cassock, cassowary, cast, castanets, caste, castellated, castigate, castigation, castle, castor, castrate, casual, casualty, casuitry, has, gush, must, lust,bush, hush, lush, mush, rush, bus, bust, dust, fuss, fuse, gust, just, muse, rust, cushion, cushy, cusp, cuss, custard, custody, custom, custume, cost