Spoiler
2: rational/rationale
4: spit/spite
6: wreath/wreathe
8: regal/regale
10: CLAM
3: Colosseum
6: Comiskey
9: CLAM
12: Muskogee
15: CLAM
4: spit/spite
6: wreath/wreathe
8: regal/regale
10: CLAM
3: Colosseum
6: Comiskey
9: CLAM
12: Muskogee
15: CLAM