Answer:
They should end up like this.
当 TOU, a(teru), a(taru) - hit, correct
夏 KA, GE, natsu - summer
温 ON, atata(kai), atata(meru) - warm
咲 sa(ku) - bloom
抜 BATSU, nu(ku), nu(kasu), nu(keru) - pull out, remove, leave out, surpass
外 GAI, GE, soto - outside, miss
冬 TOU, fuyu - winter
冷 REI, tsume(tai), hi(yasu), sa(masu) - cold, chill, poke fun at
腐 FU, kusa(ru), kusu(reru), kusa(rasu) - rotten, rot, go bad, spoil, corrode
履 RI, ha(ku) - put on, wear (shoes etc.)