undergo [v.]
-undergo
Iundergo
youundergo
heundergoes
weundergo
youundergo
theyundergo
Iunderwent
youunderwent
heunderwent
weunderwent
youunderwent
theyunderwent
Iwillundergo
youwillundergo
hewillundergo
wewillundergo
youwillundergo
theywillundergo
Ihaveundergone
youhaveundergone
hehasundergone
wehaveundergone
youhaveundergone
theyhaveundergone
-undergoing
-undergone