English verb conjugation COULD THROB

Regular verb: throb - throbbed - throbbed

Affirmation

Simple form

I could throb
you could throb
he could throb
we could throb
you could throb
they could throb

V-ing form

I could be throbbing
you could be throbbing
he could be throbbing
we could be throbbing
you could be throbbing
they could be throbbing

Perfect

I could have throbbed
you could have throbbed
he could have throbbed
we could have throbbed
you could have throbbed
they could have throbbed

V-ing perfect

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

Negation

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

Interrogative form

Simple form

could I throb?
could you throb?
could he throb?
could we throb?
could you throb?
could they throb?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

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