English verb conjugation COULD SYSTEMISE

Regular verb: systemise - systemised - systemised

Affirmation

Simple form

I could systemise
you could systemise
he could systemise
we could systemise
you could systemise
they could systemise

V-ing form

I could be systemising
you could be systemising
he could be systemising
we could be systemising
you could be systemising
they could be systemising

Perfect

I could have systemised
you could have systemised
he could have systemised
we could have systemised
you could have systemised
they could have systemised

V-ing perfect

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

Negation

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

Interrogative form

Simple form

could I systemise?
could you systemise?
could he systemise?
could we systemise?
could you systemise?
could they systemise?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

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