## Affirmation

Simple form

I *must* lie

you *must* lie

she *must* lie

we *must* lie

you *must* lie

they *must* lie

V-ing form

I *must* be l**ying**

you *must* be l**ying**

she *must* be l**ying**

we *must* be l**ying**

you *must* be l**ying**

they *must* be l**ying**

Perfect

I *must* have **lain**

you *must* have **lain**

she *must* have **lain**

we *must* have **lain**

you *must* have **lain**

they *must* have **lain**

V-ing perfect

I *must* have been l**ying**

you *must* have been l**ying**

she *must* have been l**ying**

we *must* have been l**ying**

you *must* have been l**ying**

they *must* have been l**ying**

## Negation

Simple form

I *must*n't lie

you *must*n't lie

she *must*n't lie

we *must*n't lie

you *must*n't lie

they *must*n't lie

V-ing form

I *must*n't be l**ying**

you *must*n't be l**ying**

she *must*n't be l**ying**

we *must*n't be l**ying**

you *must*n't be l**ying**

they *must*n't be l**ying**

Perfect

I *must*n't have **lain**

you *must*n't have **lain**

she *must*n't have **lain**

we *must*n't have **lain**

you *must*n't have **lain**

they *must*n't have **lain**

V-ing perfect

I *must*n't have been l**ying**

you *must*n't have been l**ying**

she *must*n't have been l**ying**

we *must*n't have been l**ying**

you *must*n't have been l**ying**

they *must*n't have been l**ying**

## Interrogative form

Simple form

*must* I lie?*must* you lie?*must* she lie?*must* we lie?*must* you lie?*must* they lie?

V-ing form

*must* I be l**ying**?*must* you be l**ying**?*must* she be l**ying**?*must* we be l**ying**?*must* you be l**ying**?*must* they be l**ying**?

Perfect

*must* I have **lain**?*must* you have **lain**?*must* she have **lain**?*must* we have **lain**?*must* you have **lain**?*must* they have **lain**?

V-ing perfect

*must* I have been l**ying**?*must* you have been l**ying**?*must* she have been l**ying**?*must* we have been l**ying**?*must* you have been l**ying**?*must* they have been l**ying**?

## Interro-negative form

Simple form

*must*n't I lie?*must*n't you lie?*must*n't she lie?*must*n't we lie?*must*n't you lie?*must*n't they lie?

V-ing form

*must*n't I be l**ying**?*must*n't you be l**ying**?*must*n't she be l**ying**?*must*n't we be l**ying**?*must*n't you be l**ying**?*must*n't they be l**ying**?

Perfect

*must*n't I have **lain**?*must*n't you have **lain**?*must*n't she have **lain**?*must*n't we have **lain**?*must*n't you have **lain**?*must*n't they have **lain**?

V-ing perfect

*must*n't I have been l**ying**?*must*n't you have been l**ying**?*must*n't she have been l**ying**?*must*n't we have been l**ying**?*must*n't you have been l**ying**?*must*n't they have been l**ying**?