feel ... fill

feel ... fell

fill ... fell

picked ... peck

peeked ... pick

pecked ... peek

tin ... ten

teen ... tin

teen ... ten

pet ... pit

pit ... pet

pit ... Pete

bet ... beat

bit ... beat

bit ... bet

red ... rid

red ... read

rid ... red

deed ... did

dead ... deed

deed ... dead

net ... knit

neat ... knit

neat ... net

dean ... din ... den

din ... dean ... den

dean ... den ... din