English verb conjugation
MUST UNLATCH

Regular verb: unlatch - unlatched - unlatched

Affirmation

Simple form	V-ing form
I must unlatch you must unlatch he must unlatch we must unlatch you must unlatch they must unlatch	I must be unlatching you must be unlatching he must be unlatching we must be unlatching you must be unlatching they must be unlatching
Perfect	V-ing perfect
I must have unlatched you must have unlatched he must have unlatched we must have unlatched you must have unlatched they must have unlatched	I must have been unlatching you must have been unlatching he must have been unlatching we must have been unlatching you must have been unlatching they must have been unlatching

Negation

Simple form	V-ing form
I mustn't unlatch you mustn't unlatch he mustn't unlatch we mustn't unlatch you mustn't unlatch they mustn't unlatch	I mustn't be unlatching you mustn't be unlatching he mustn't be unlatching we mustn't be unlatching you mustn't be unlatching they mustn't be unlatching
Perfect	V-ing perfect
I mustn't have unlatched you mustn't have unlatched he mustn't have unlatched we mustn't have unlatched you mustn't have unlatched they mustn't have unlatched	I mustn't have been unlatching you mustn't have been unlatching he mustn't have been unlatching we mustn't have been unlatching you mustn't have been unlatching they mustn't have been unlatching

Interrogative form

Simple form	V-ing form
must I unlatch? must you unlatch? must he unlatch? must we unlatch? must you unlatch? must they unlatch?	must I be unlatching? must you be unlatching? must he be unlatching? must we be unlatching? must you be unlatching? must they be unlatching?
Perfect	V-ing perfect
must I have unlatched? must you have unlatched? must he have unlatched? must we have unlatched? must you have unlatched? must they have unlatched?	must I have been unlatching? must you have been unlatching? must he have been unlatching? must we have been unlatching? must you have been unlatching? must they have been unlatching?

Interro-negative form

Simple form	V-ing form
mustn't I unlatch? mustn't you unlatch? mustn't he unlatch? mustn't we unlatch? mustn't you unlatch? mustn't they unlatch?	mustn't I be unlatching? mustn't you be unlatching? mustn't he be unlatching? mustn't we be unlatching? mustn't you be unlatching? mustn't they be unlatching?
Perfect	V-ing perfect
mustn't I have unlatched? mustn't you have unlatched? mustn't he have unlatched? mustn't we have unlatched? mustn't you have unlatched? mustn't they have unlatched?	mustn't I have been unlatching? mustn't you have been unlatching? mustn't he have been unlatching? mustn't we have been unlatching? mustn't you have been unlatching? mustn't they have been unlatching?