I must prune you must prune he must prune we must prune you must prune they must prune
V-ing form
I must be pruning you must be pruning he must be pruning we must be pruning you must be pruning they must be pruning
Perfect
I must have pruned you must have pruned he must have pruned we must have pruned you must have pruned they must have pruned
V-ing perfect
I must have been pruning you must have been pruning he must have been pruning we must have been pruning you must have been pruning they must have been pruning
Negation
Simple form
I must not prune you must not prune he must not prune we must not prune you must not prune they must not prune
V-ing form
I must not be pruning you must not be pruning he must not be pruning we must not be pruning you must not be pruning they must not be pruning
Perfect
I must not have pruned you must not have pruned he must not have pruned we must not have pruned you must not have pruned they must not have pruned
V-ing perfect
I must not have been pruning you must not have been pruning he must not have been pruning we must not have been pruning you must not have been pruning they must not have been pruning
Interrogative form
Simple form
must I prune? must you prune? must he prune? must we prune? must you prune? must they prune?
V-ing form
must I be pruning? must you be pruning? must he be pruning? must we be pruning? must you be pruning? must they be pruning?
Perfect
must I have pruned? must you have pruned? must he have pruned? must we have pruned? must you have pruned? must they have pruned?
V-ing perfect
must I have been pruning? must you have been pruning? must he have been pruning? must we have been pruning? must you have been pruning? must they have been pruning?
Interro-negative form
Simple form
must I not prune? must you not prune? must he not prune? must we not prune? must you not prune? must they not prune?
V-ing form
must I not be pruning? must you not be pruning? must he not be pruning? must we not be pruning? must you not be pruning? must they not be pruning?
Perfect
must I not have pruned? must you not have pruned? must he not have pruned? must we not have pruned? must you not have pruned? must they not have pruned?
V-ing perfect
must I not have been pruning? must you not have been pruning? must he not have been pruning? must we not have been pruning? must you not have been pruning? must they not have been pruning?