blog, blot ฯลฯ

club, clip ฯลฯ

flat, flag ฯลฯ

glad, glen ฯลฯ

plan, play ฯลฯ

slip, slot ฯลฯ

bred, bran ฯลฯ

crop, crap ฯลฯ

drug, drop ฯลฯ

from, frog ฯลฯ

grid, grip ฯลฯ

prop, prof ฯลฯ

trip, trap ฯลฯ

scan, scot ฯลฯ

smog, smug ฯลฯ

snap, snag ฯลฯ

swim, swam ฯลฯ

twin, twig ฯลฯ