English verb conjugation
MUST COLLECT

Regular verb: collect - collected - collected

Affirmation

Simple form	V-ing form
I must collect you must collect she must collect we must collect you must collect they must collect	I must be collecting you must be collecting she must be collecting we must be collecting you must be collecting they must be collecting
Perfect	V-ing perfect
I must have collected you must have collected she must have collected we must have collected you must have collected they must have collected	I must have been collecting you must have been collecting she must have been collecting we must have been collecting you must have been collecting they must have been collecting

Negation

Simple form	V-ing form
I mustn't collect you mustn't collect she mustn't collect we mustn't collect you mustn't collect they mustn't collect	I mustn't be collecting you mustn't be collecting she mustn't be collecting we mustn't be collecting you mustn't be collecting they mustn't be collecting
Perfect	V-ing perfect
I mustn't have collected you mustn't have collected she mustn't have collected we mustn't have collected you mustn't have collected they mustn't have collected	I mustn't have been collecting you mustn't have been collecting she mustn't have been collecting we mustn't have been collecting you mustn't have been collecting they mustn't have been collecting

Interrogative form

Simple form	V-ing form
must I collect? must you collect? must she collect? must we collect? must you collect? must they collect?	must I be collecting? must you be collecting? must she be collecting? must we be collecting? must you be collecting? must they be collecting?
Perfect	V-ing perfect
must I have collected? must you have collected? must she have collected? must we have collected? must you have collected? must they have collected?	must I have been collecting? must you have been collecting? must she have been collecting? must we have been collecting? must you have been collecting? must they have been collecting?

Interro-negative form

Simple form	V-ing form
mustn't I collect? mustn't you collect? mustn't she collect? mustn't we collect? mustn't you collect? mustn't they collect?	mustn't I be collecting? mustn't you be collecting? mustn't she be collecting? mustn't we be collecting? mustn't you be collecting? mustn't they be collecting?
Perfect	V-ing perfect
mustn't I have collected? mustn't you have collected? mustn't she have collected? mustn't we have collected? mustn't you have collected? mustn't they have collected?	mustn't I have been collecting? mustn't you have been collecting? mustn't she have been collecting? mustn't we have been collecting? mustn't you have been collecting? mustn't they have been collecting?