English verb conjugation MUST LUMBER

Regular verb: lumber - lumbered - lumbered

Affirmation

Simple form

I must lumber
you must lumber
she must lumber
we must lumber
you must lumber
they must lumber

V-ing form

I must be lumbering
you must be lumbering
she must be lumbering
we must be lumbering
you must be lumbering
they must be lumbering

Perfect

I must have lumbered
you must have lumbered
she must have lumbered
we must have lumbered
you must have lumbered
they must have lumbered

V-ing perfect

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

Negation

Simple form

I mustn't lumber
you mustn't lumber
she mustn't lumber
we mustn't lumber
you mustn't lumber
they mustn't lumber

V-ing form

I mustn't be lumbering
you mustn't be lumbering
she mustn't be lumbering
we mustn't be lumbering
you mustn't be lumbering
they mustn't be lumbering

Perfect

I mustn't have lumbered
you mustn't have lumbered
she mustn't have lumbered
we mustn't have lumbered
you mustn't have lumbered
they mustn't have lumbered

V-ing perfect

I mustn't have been lumbering
you mustn't have been lumbering
she mustn't have been lumbering
we mustn't have been lumbering
you mustn't have been lumbering
they mustn't have been lumbering

Interrogative form

Simple form

must I lumber?
must you lumber?
must she lumber?
must we lumber?
must you lumber?
must they lumber?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

mustn't I lumber?
mustn't you lumber?
mustn't she lumber?
mustn't we lumber?
mustn't you lumber?
mustn't they lumber?

V-ing form

mustn't I be lumbering?
mustn't you be lumbering?
mustn't she be lumbering?
mustn't we be lumbering?
mustn't you be lumbering?
mustn't they be lumbering?

Perfect

mustn't I have lumbered?
mustn't you have lumbered?
mustn't she have lumbered?
mustn't we have lumbered?
mustn't you have lumbered?
mustn't they have lumbered?

V-ing perfect

mustn't I have been lumbering?
mustn't you have been lumbering?
mustn't she have been lumbering?
mustn't we have been lumbering?
mustn't you have been lumbering?
mustn't they have been lumbering?

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