English verb conjugation
MUST PRUNE

Regular verb: prune - pruned - pruned

Affirmation

Simple form	V-ing form
I must prune you must prune he must prune we must prune you must prune they must prune	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	V-ing 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	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	V-ing form
I mustn't prune you mustn't prune he mustn't prune we mustn't prune you mustn't prune they mustn't prune	I mustn't be pruning you mustn't be pruning he mustn't be pruning we mustn't be pruning you mustn't be pruning they mustn't be pruning
Perfect	V-ing perfect
I mustn't have pruned you mustn't have pruned he mustn't have pruned we mustn't have pruned you mustn't have pruned they mustn't have pruned	I mustn't have been pruning you mustn't have been pruning he mustn't have been pruning we mustn't have been pruning you mustn't have been pruning they mustn't have been pruning

Interrogative form

Simple form	V-ing form
must I prune? must you prune? must he prune? must we prune? must you prune? must they prune?	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	V-ing 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?	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	V-ing form
mustn't I prune? mustn't you prune? mustn't he prune? mustn't we prune? mustn't you prune? mustn't they prune?	mustn't I be pruning? mustn't you be pruning? mustn't he be pruning? mustn't we be pruning? mustn't you be pruning? mustn't they be pruning?
Perfect	V-ing perfect
mustn't I have pruned? mustn't you have pruned? mustn't he have pruned? mustn't we have pruned? mustn't you have pruned? mustn't they have pruned?	mustn't I have been pruning? mustn't you have been pruning? mustn't he have been pruning? mustn't we have been pruning? mustn't you have been pruning? mustn't they have been pruning?