English verb conjugation MUST GROUP

Regular verb: group - grouped - grouped

Affirmation

Simple form

I must group
you must group
he must group
we must group
you must group
they must group

V-ing form

I must be grouping
you must be grouping
he must be grouping
we must be grouping
you must be grouping
they must be grouping

Perfect

I must have grouped
you must have grouped
he must have grouped
we must have grouped
you must have grouped
they must have grouped

V-ing perfect

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

Negation

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

Interrogative form

Simple form

must I group?
must you group?
must he group?
must we group?
must you group?
must they group?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

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