2) thin, thinner, the thinnest
3) big, bigger, the biggest
4) dirty, dirtier, the dirstiest
5) nice,nicer, the nicest
6) cold, colder, the coldest
7) happy, happier, the happiest
8) fun, funnier, the funniest
9) most, mostly, the most
10) good, better, the best
11) bad, worse, the worst
12 hot, hotter, the hottest