English verb conjugation
MUST ZAP

Regular verb: zap - zapped - zapped

Affirmation

Simple form	V-ing form
I must zap you must zap he must zap we must zap you must zap they must zap	I must be zapping you must be zapping he must be zapping we must be zapping you must be zapping they must be zapping
Perfect	V-ing perfect
I must have zapped you must have zapped he must have zapped we must have zapped you must have zapped they must have zapped	I must have been zapping you must have been zapping he must have been zapping we must have been zapping you must have been zapping they must have been zapping

Negation

Simple form	V-ing form
I mustn't zap you mustn't zap he mustn't zap we mustn't zap you mustn't zap they mustn't zap	I mustn't be zapping you mustn't be zapping he mustn't be zapping we mustn't be zapping you mustn't be zapping they mustn't be zapping
Perfect	V-ing perfect
I mustn't have zapped you mustn't have zapped he mustn't have zapped we mustn't have zapped you mustn't have zapped they mustn't have zapped	I mustn't have been zapping you mustn't have been zapping he mustn't have been zapping we mustn't have been zapping you mustn't have been zapping they mustn't have been zapping

Interrogative form

Simple form	V-ing form
must I zap? must you zap? must he zap? must we zap? must you zap? must they zap?	must I be zapping? must you be zapping? must he be zapping? must we be zapping? must you be zapping? must they be zapping?
Perfect	V-ing perfect
must I have zapped? must you have zapped? must he have zapped? must we have zapped? must you have zapped? must they have zapped?	must I have been zapping? must you have been zapping? must he have been zapping? must we have been zapping? must you have been zapping? must they have been zapping?

Interro-negative form

Simple form	V-ing form
mustn't I zap? mustn't you zap? mustn't he zap? mustn't we zap? mustn't you zap? mustn't they zap?	mustn't I be zapping? mustn't you be zapping? mustn't he be zapping? mustn't we be zapping? mustn't you be zapping? mustn't they be zapping?
Perfect	V-ing perfect
mustn't I have zapped? mustn't you have zapped? mustn't he have zapped? mustn't we have zapped? mustn't you have zapped? mustn't they have zapped?	mustn't I have been zapping? mustn't you have been zapping? mustn't he have been zapping? mustn't we have been zapping? mustn't you have been zapping? mustn't they have been zapping?