English verb conjugation MUST CRYSTALLISE

Regular verb: crystallise - crystallised - crystallised

Affirmation

Simple form

I must crystallise
you must crystallise
he must crystallise
we must crystallise
you must crystallise
they must crystallise

V-ing form

I must be crystallising
you must be crystallising
he must be crystallising
we must be crystallising
you must be crystallising
they must be crystallising

Perfect

I must have crystallised
you must have crystallised
he must have crystallised
we must have crystallised
you must have crystallised
they must have crystallised

V-ing perfect

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

Negation

Simple form

I must not crystallise
you must not crystallise
he must not crystallise
we must not crystallise
you must not crystallise
they must not crystallise

V-ing form

I must not be crystallising
you must not be crystallising
he must not be crystallising
we must not be crystallising
you must not be crystallising
they must not be crystallising

Perfect

I must not have crystallised
you must not have crystallised
he must not have crystallised
we must not have crystallised
you must not have crystallised
they must not have crystallised

V-ing perfect

I must not have been crystallising
you must not have been crystallising
he must not have been crystallising
we must not have been crystallising
you must not have been crystallising
they must not have been crystallising

Interrogative form

Simple form

must I crystallise?
must you crystallise?
must he crystallise?
must we crystallise?
must you crystallise?
must they crystallise?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

must I not crystallise?
must you not crystallise?
must he not crystallise?
must we not crystallise?
must you not crystallise?
must they not crystallise?

V-ing form

must I not be crystallising?
must you not be crystallising?
must he not be crystallising?
must we not be crystallising?
must you not be crystallising?
must they not be crystallising?

Perfect

must I not have crystallised?
must you not have crystallised?
must he not have crystallised?
must we not have crystallised?
must you not have crystallised?
must they not have crystallised?

V-ing perfect

must I not have been crystallising?
must you not have been crystallising?
must he not have been crystallising?
must we not have been crystallising?
must you not have been crystallising?
must they not have been crystallising?

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