eat-eats-eating-ate-eaten
go -goes-going-went-gone
rise-rises-rising-rose-risen
see-sees-seeing-saw-seen
speak-speaks-speaking-spoke-spoken
fly-flies-flying-flew-flown
catch-catches-catching-caught-caught
fall-falls-falling-fell-fallen
lose-loses-losing-lost-lost
write-writes-writing-wrote-written
spell-spells-spelling-spelt-spelt