English verb conjugation MUST DEVISE

Regular verb: devise - devised - devised

Affirmation

Simple form

I must devise
you must devise
he must devise
we must devise
you must devise
they must devise

V-ing form

I must be devising
you must be devising
he must be devising
we must be devising
you must be devising
they must be devising

Perfect

I must have devised
you must have devised
he must have devised
we must have devised
you must have devised
they must have devised

V-ing perfect

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

Negation

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

Interrogative form

Simple form

must I devise?
must you devise?
must he devise?
must we devise?
must you devise?
must they devise?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

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