English verb conjugation COULD CRYSTALLISE

Regular verb: crystallise - crystallised - crystallised

Affirmation

Simple form

I could crystallise
you could crystallise
he could crystallise
we could crystallise
you could crystallise
they could crystallise

V-ing form

I could be crystallising
you could be crystallising
he could be crystallising
we could be crystallising
you could be crystallising
they could be crystallising

Perfect

I could have crystallised
you could have crystallised
he could have crystallised
we could have crystallised
you could have crystallised
they could have crystallised

V-ing perfect

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

Negation

Simple form

I couldn't crystallise
you couldn't crystallise
he couldn't crystallise
we couldn't crystallise
you couldn't crystallise
they couldn't crystallise

V-ing form

I couldn't be crystallising
you couldn't be crystallising
he couldn't be crystallising
we couldn't be crystallising
you couldn't be crystallising
they couldn't be crystallising

Perfect

I couldn't have crystallised
you couldn't have crystallised
he couldn't have crystallised
we couldn't have crystallised
you couldn't have crystallised
they couldn't have crystallised

V-ing perfect

I couldn't have been crystallising
you couldn't have been crystallising
he couldn't have been crystallising
we couldn't have been crystallising
you couldn't have been crystallising
they couldn't have been crystallising

Interrogative form

Simple form

could I crystallise?
could you crystallise?
could he crystallise?
could we crystallise?
could you crystallise?
could they crystallise?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

couldn't I crystallise?
couldn't you crystallise?
couldn't he crystallise?
couldn't we crystallise?
couldn't you crystallise?
couldn't they crystallise?

V-ing form

couldn't I be crystallising?
couldn't you be crystallising?
couldn't he be crystallising?
couldn't we be crystallising?
couldn't you be crystallising?
couldn't they be crystallising?

Perfect

couldn't I have crystallised?
couldn't you have crystallised?
couldn't he have crystallised?
couldn't we have crystallised?
couldn't you have crystallised?
couldn't they have crystallised?

V-ing perfect

couldn't I have been crystallising?
couldn't you have been crystallising?
couldn't he have been crystallising?
couldn't we have been crystallising?
couldn't you have been crystallising?
couldn't they have been crystallising?

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