English verb conjugation COULD SYNTHESISE

Regular verb: synthesise - synthesised - synthesised

Affirmation

Simple form

I could synthesise
you could synthesise
he could synthesise
we could synthesise
you could synthesise
they could synthesise

V-ing form

I could be synthesising
you could be synthesising
he could be synthesising
we could be synthesising
you could be synthesising
they could be synthesising

Perfect

I could have synthesised
you could have synthesised
he could have synthesised
we could have synthesised
you could have synthesised
they could have synthesised

V-ing perfect

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

Negation

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

Interrogative form

Simple form

could I synthesise?
could you synthesise?
could he synthesise?
could we synthesise?
could you synthesise?
could they synthesise?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

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