Grammar Challenge

consider to consider considering consideration

is are has have

must sign must be signed must have signed is signed

submits submitted submit has submitted

telling to tell tell having told

are speaking is speaking were speaking speak

lived has lived had lived was living

must be signed must sign must have signed must been signed

would take would have taken will take took

would come would have come will come came

listened was listening had listened has listened

paid had paid have paid would pay

Not knowing Not known Not to know Not having known

was were am would be

already started had already started has already started was already started

is believed believes is believing believed

do did have done are doing

is was be were

he arrived did he arrive he did arrive arrived he

Praising Praised Being praised Having praised