cost
cost cost
teach
taught taught
begin
began begun
blow
blew blown
hang
hung hung (hanged)
understand
understood understood
lie
lay lain
shoot
shot shot
bite
bit bitten
rise
rose risen
wake
woke woken
fly
flew flown
fight
fought fought
feel
felt felt
lay
laid laid
ring
rang rung
burn
burnt burnt (burned)
hide
hid hidden
throw
threw thrown
sing
sang sung
stick
stuck stuck
sweep
swept swept
let
let let
tear
tore torn