TRAVEL
TRAVELLED
WEAR
WORE
WRITE
WROTE
ENROL
ENROLLED
MAKE
MADE
SAIL
SAILED
BE
WAS / WERE
SHOW
SHOWED
IMPROVE
IMPROVED
STUDY
STUDIED
ARRIVE
ARRIVE
ASSEMBLE
ASSEMBLED
BE BORN
WAS BORN
ASK
ASKED
REDUCE
REDUCED
PERFORM
PERFORMED
MARRY
MARRIED
CONTAMINATE
CONTAMINATED
MOVE
MOVED
INVENT
INVENTED
RECEIVE
RECEIVED
HELP
HELPED
RETURN
RETURNED
TREAT
TREATED
USE
USED
INFEST
INFESTED
LIE
LAY
ESTABLISH
ESTABLISHED