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Ответ:

fat, fatter, the fattest

thin, thinner, the thinnest

hot, hotter, the hottest

warm, warmer, the warmest

cold, colder, the coldest

smart, smarter, the smartest

deep, deeper, the deepest

good, better, the best

bad, worse, the worst

small, smaller, the smallest

high, higher, the highest

short, shorter, the shortest

new, newer, the newest

old, older, the oldest

Hope it helped :)