fall-fell-fallen
win-won-won
write-wrote-written
sing-sang-sung
burn-burnt-burnt
feed-fed-fed
run-ran-run
fly-flew-flown
spin-spun-spun
drink-drank-drunk
draw-drew-drown
build-built-built
cut-cut-cut
blow-blew-blown
eat-ate-eaten
read-read-read
fight-fought-fought
buy-bought-bought or pay-paid-paid
Sleep-slept-slept
see-saw-seen