English verb conjugation MUST YUCK

Regular verb: yuck - yucked - yucked

Affirmation

Simple form

I must yuck
you must yuck
he must yuck
we must yuck
you must yuck
they must yuck

V-ing form

I must be yucking
you must be yucking
he must be yucking
we must be yucking
you must be yucking
they must be yucking

Perfect

I must have yucked
you must have yucked
he must have yucked
we must have yucked
you must have yucked
they must have yucked

V-ing perfect

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

Negation

Simple form

I mustn't yuck
you mustn't yuck
he mustn't yuck
we mustn't yuck
you mustn't yuck
they mustn't yuck

V-ing form

I mustn't be yucking
you mustn't be yucking
he mustn't be yucking
we mustn't be yucking
you mustn't be yucking
they mustn't be yucking

Perfect

I mustn't have yucked
you mustn't have yucked
he mustn't have yucked
we mustn't have yucked
you mustn't have yucked
they mustn't have yucked

V-ing perfect

I mustn't have been yucking
you mustn't have been yucking
he mustn't have been yucking
we mustn't have been yucking
you mustn't have been yucking
they mustn't have been yucking

Interrogative form

Simple form

must I yuck?
must you yuck?
must he yuck?
must we yuck?
must you yuck?
must they yuck?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

mustn't I yuck?
mustn't you yuck?
mustn't he yuck?
mustn't we yuck?
mustn't you yuck?
mustn't they yuck?

V-ing form

mustn't I be yucking?
mustn't you be yucking?
mustn't he be yucking?
mustn't we be yucking?
mustn't you be yucking?
mustn't they be yucking?

Perfect

mustn't I have yucked?
mustn't you have yucked?
mustn't he have yucked?
mustn't we have yucked?
mustn't you have yucked?
mustn't they have yucked?

V-ing perfect

mustn't I have been yucking?
mustn't you have been yucking?
mustn't he have been yucking?
mustn't we have been yucking?
mustn't you have been yucking?
mustn't they have been yucking?

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