Grammar Challenge

must sign must be signed must have signed is signed

was were am would be

is are has have

lived has lived had lived was living

Praising Praised Being praised Having praised

already started had already started has already started was already started

he arrived did he arrive he did arrive arrived he

would come would have come will come came

is believed believes is believing believed

consider to consider considering consideration

must be signed must sign must have signed must been signed

submits submitted submit has submitted

do did have done are doing

is was be were

listened was listening had listened has listened

would take would have taken will take took

paid had paid have paid would pay

are speaking is speaking were speaking speak

telling to tell tell having told

Not knowing Not known Not to know Not having known