English verb conjugation MUST LAST

Regular verb: last - lasted - lasted

Affirmation

Simple form

I must last
you must last
she must last
we must last
you must last
they must last

V-ing form

I must be lasting
you must be lasting
she must be lasting
we must be lasting
you must be lasting
they must be lasting

Perfect

I must have lasted
you must have lasted
she must have lasted
we must have lasted
you must have lasted
they must have lasted

V-ing perfect

I must have been lasting
you must have been lasting
she must have been lasting
we must have been lasting
you must have been lasting
they must have been lasting

Negation

Simple form

I must not last
you must not last
she must not last
we must not last
you must not last
they must not last

V-ing form

I must not be lasting
you must not be lasting
she must not be lasting
we must not be lasting
you must not be lasting
they must not be lasting

Perfect

I must not have lasted
you must not have lasted
she must not have lasted
we must not have lasted
you must not have lasted
they must not have lasted

V-ing perfect

I must not have been lasting
you must not have been lasting
she must not have been lasting
we must not have been lasting
you must not have been lasting
they must not have been lasting

Interrogative form

Simple form

must I last?
must you last?
must she last?
must we last?
must you last?
must they last?

V-ing form

must I be lasting?
must you be lasting?
must she be lasting?
must we be lasting?
must you be lasting?
must they be lasting?

Perfect

must I have lasted?
must you have lasted?
must she have lasted?
must we have lasted?
must you have lasted?
must they have lasted?

V-ing perfect

must I have been lasting?
must you have been lasting?
must she have been lasting?
must we have been lasting?
must you have been lasting?
must they have been lasting?

Interro-negative form

Simple form

must I not last?
must you not last?
must she not last?
must we not last?
must you not last?
must they not last?

V-ing form

must I not be lasting?
must you not be lasting?
must she not be lasting?
must we not be lasting?
must you not be lasting?
must they not be lasting?

Perfect

must I not have lasted?
must you not have lasted?
must she not have lasted?
must we not have lasted?
must you not have lasted?
must they not have lasted?

V-ing perfect

must I not have been lasting?
must you not have been lasting?
must she not have been lasting?
must we not have been lasting?
must you not have been lasting?
must they not have been lasting?

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