English verb conjugation MUST YAP

Regular verb: yap - yapped - yapped

Affirmation

Simple form

I must yap
you must yap
he must yap
we must yap
you must yap
they must yap

V-ing form

I must be yapping
you must be yapping
he must be yapping
we must be yapping
you must be yapping
they must be yapping

Perfect

I must have yapped
you must have yapped
he must have yapped
we must have yapped
you must have yapped
they must have yapped

V-ing perfect

I must have been yapping
you must have been yapping
he must have been yapping
we must have been yapping
you must have been yapping
they must have been yapping

Negation

Simple form

I must not yap
you must not yap
he must not yap
we must not yap
you must not yap
they must not yap

V-ing form

I must not be yapping
you must not be yapping
he must not be yapping
we must not be yapping
you must not be yapping
they must not be yapping

Perfect

I must not have yapped
you must not have yapped
he must not have yapped
we must not have yapped
you must not have yapped
they must not have yapped

V-ing perfect

I must not have been yapping
you must not have been yapping
he must not have been yapping
we must not have been yapping
you must not have been yapping
they must not have been yapping

Interrogative form

Simple form

must I yap?
must you yap?
must he yap?
must we yap?
must you yap?
must they yap?

V-ing form

must I be yapping?
must you be yapping?
must he be yapping?
must we be yapping?
must you be yapping?
must they be yapping?

Perfect

must I have yapped?
must you have yapped?
must he have yapped?
must we have yapped?
must you have yapped?
must they have yapped?

V-ing perfect

must I have been yapping?
must you have been yapping?
must he have been yapping?
must we have been yapping?
must you have been yapping?
must they have been yapping?

Interro-negative form

Simple form

must I not yap?
must you not yap?
must he not yap?
must we not yap?
must you not yap?
must they not yap?

V-ing form

must I not be yapping?
must you not be yapping?
must he not be yapping?
must we not be yapping?
must you not be yapping?
must they not be yapping?

Perfect

must I not have yapped?
must you not have yapped?
must he not have yapped?
must we not have yapped?
must you not have yapped?
must they not have yapped?

V-ing perfect

must I not have been yapping?
must you not have been yapping?
must he not have been yapping?
must we not have been yapping?
must you not have been yapping?
must they not have been yapping?

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