English verb conjugation COULD SYNTHESIZE

Regular verb: synthesize - synthesized - synthesized

Affirmation

Simple form

I could synthesize
you could synthesize
he could synthesize
we could synthesize
you could synthesize
they could synthesize

V-ing form

I could be synthesizing
you could be synthesizing
he could be synthesizing
we could be synthesizing
you could be synthesizing
they could be synthesizing

Perfect

I could have synthesized
you could have synthesized
he could have synthesized
we could have synthesized
you could have synthesized
they could have synthesized

V-ing perfect

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

Negation

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

Interrogative form

Simple form

could I synthesize?
could you synthesize?
could he synthesize?
could we synthesize?
could you synthesize?
could they synthesize?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

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