English verb conjugation COULD RESPOND

Regular verb: respond - responded - responded

Affirmation

Simple form

I could respond
you could respond
he could respond
we could respond
you could respond
they could respond

V-ing form

I could be responding
you could be responding
he could be responding
we could be responding
you could be responding
they could be responding

Perfect

I could have responded
you could have responded
he could have responded
we could have responded
you could have responded
they could have responded

V-ing perfect

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

Negation

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

Interrogative form

Simple form

could I respond?
could you respond?
could he respond?
could we respond?
could you respond?
could they respond?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

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