English verb conjugation COULD SYSTEMATISE

Regular verb: systematise - systematised - systematised

Affirmation

Simple form

I could systematise
you could systematise
he could systematise
we could systematise
you could systematise
they could systematise

V-ing form

I could be systematising
you could be systematising
he could be systematising
we could be systematising
you could be systematising
they could be systematising

Perfect

I could have systematised
you could have systematised
he could have systematised
we could have systematised
you could have systematised
they could have systematised

V-ing perfect

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

Negation

Simple form

I could not systematise
you could not systematise
he could not systematise
we could not systematise
you could not systematise
they could not systematise

V-ing form

I could not be systematising
you could not be systematising
he could not be systematising
we could not be systematising
you could not be systematising
they could not be systematising

Perfect

I could not have systematised
you could not have systematised
he could not have systematised
we could not have systematised
you could not have systematised
they could not have systematised

V-ing perfect

I could not have been systematising
you could not have been systematising
he could not have been systematising
we could not have been systematising
you could not have been systematising
they could not have been systematising

Interrogative form

Simple form

could I systematise?
could you systematise?
could he systematise?
could we systematise?
could you systematise?
could they systematise?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

could I not systematise?
could you not systematise?
could he not systematise?
could we not systematise?
could you not systematise?
could they not systematise?

V-ing form

could I not be systematising?
could you not be systematising?
could he not be systematising?
could we not be systematising?
could you not be systematising?
could they not be systematising?

Perfect

could I not have systematised?
could you not have systematised?
could he not have systematised?
could we not have systematised?
could you not have systematised?
could they not have systematised?

V-ing perfect

could I not have been systematising?
could you not have been systematising?
could he not have been systematising?
could we not have been systematising?
could you not have been systematising?
could they not have been systematising?

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