## Affirmation

Forme simple

I *must* subtract

you *must* subtract

he *must* subtract

we *must* subtract

you *must* subtract

they *must* subtract

Forme en V-ing

I *must* be subtract**ing**

you *must* be subtract**ing**

he *must* be subtract**ing**

we *must* be subtract**ing**

you *must* be subtract**ing**

they *must* be subtract**ing**

Perfect

I *must* have subtract**ed**

you *must* have subtract**ed**

he *must* have subtract**ed**

we *must* have subtract**ed**

you *must* have subtract**ed**

they *must* have subtract**ed**

Perfect en V-ing

I *must* have been subtract**ing**

you *must* have been subtract**ing**

he *must* have been subtract**ing**

we *must* have been subtract**ing**

you *must* have been subtract**ing**

they *must* have been subtract**ing**

## Négation

Forme simple

I *must* not subtract

you *must* not subtract

he *must* not subtract

we *must* not subtract

you *must* not subtract

they *must* not subtract

Forme en V-ing

I *must* not be subtract**ing**

you *must* not be subtract**ing**

he *must* not be subtract**ing**

we *must* not be subtract**ing**

you *must* not be subtract**ing**

they *must* not be subtract**ing**

Perfect

I *must* not have subtract**ed**

you *must* not have subtract**ed**

he *must* not have subtract**ed**

we *must* not have subtract**ed**

you *must* not have subtract**ed**

they *must* not have subtract**ed**

Perfect en V-ing

I *must* not have been subtract**ing**

you *must* not have been subtract**ing**

he *must* not have been subtract**ing**

we *must* not have been subtract**ing**

you *must* not have been subtract**ing**

they *must* not have been subtract**ing**

## Forme interrogative

Forme simple

*must* I subtract?*must* you subtract?*must* he subtract?*must* we subtract?*must* you subtract?*must* they subtract?

Forme en V-ing

*must* I be subtract**ing**?*must* you be subtract**ing**?*must* he be subtract**ing**?*must* we be subtract**ing**?*must* you be subtract**ing**?*must* they be subtract**ing**?

Perfect

*must* I have subtract**ed**?*must* you have subtract**ed**?*must* he have subtract**ed**?*must* we have subtract**ed**?*must* you have subtract**ed**?*must* they have subtract**ed**?

Perfect en V-ing

*must* I have been subtract**ing**?*must* you have been subtract**ing**?*must* he have been subtract**ing**?*must* we have been subtract**ing**?*must* you have been subtract**ing**?*must* they have been subtract**ing**?

## Forme interro-négative

Forme simple

*must* I not subtract?*must* you not subtract?*must* he not subtract?*must* we not subtract?*must* you not subtract?*must* they not subtract?

Forme en V-ing

*must* I not be subtract**ing**?*must* you not be subtract**ing**?*must* he not be subtract**ing**?*must* we not be subtract**ing**?*must* you not be subtract**ing**?*must* they not be subtract**ing**?

Perfect

*must* I not have subtract**ed**?*must* you not have subtract**ed**?*must* he not have subtract**ed**?*must* we not have subtract**ed**?*must* you not have subtract**ed**?*must* they not have subtract**ed**?

Perfect en V-ing

*must* I not have been subtract**ing**?*must* you not have been subtract**ing**?*must* he not have been subtract**ing**?*must* we not have been subtract**ing**?*must* you not have been subtract**ing**?*must* they not have been subtract**ing**?