English verb conjugation
COULD GO

Irregular verb: go - went - gone

Affirmation

Simple form	V-ing form
I could go you could go he could go we could go you could go they could go	I could be going you could be going he could be going we could be going you could be going they could be going
Perfect	V-ing perfect
I could have gone you could have gone he could have gone we could have gone you could have gone they could have gone	I could have been going you could have been going he could have been going we could have been going you could have been going they could have been going

Negation

Simple form	V-ing form
I couldn't go you couldn't go he couldn't go we couldn't go you couldn't go they couldn't go	I couldn't be going you couldn't be going he couldn't be going we couldn't be going you couldn't be going they couldn't be going
Perfect	V-ing perfect
I couldn't have gone you couldn't have gone he couldn't have gone we couldn't have gone you couldn't have gone they couldn't have gone	I couldn't have been going you couldn't have been going he couldn't have been going we couldn't have been going you couldn't have been going they couldn't have been going

Interrogative form

Simple form	V-ing form
could I go? could you go? could he go? could we go? could you go? could they go?	could I be going? could you be going? could he be going? could we be going? could you be going? could they be going?
Perfect	V-ing perfect
could I have gone? could you have gone? could he have gone? could we have gone? could you have gone? could they have gone?	could I have been going? could you have been going? could he have been going? could we have been going? could you have been going? could they have been going?

Interro-negative form

Simple form	V-ing form
couldn't I go? couldn't you go? couldn't he go? couldn't we go? couldn't you go? couldn't they go?	couldn't I be going? couldn't you be going? couldn't he be going? couldn't we be going? couldn't you be going? couldn't they be going?
Perfect	V-ing perfect
couldn't I have gone? couldn't you have gone? couldn't he have gone? couldn't we have gone? couldn't you have gone? couldn't they have gone?	couldn't I have been going? couldn't you have been going? couldn't he have been going? couldn't we have been going? couldn't you have been going? couldn't they have been going?