English verb conjugation
COULD COPULATE

Regular verb: copulate - copulated - copulated

Affirmation

Simple form	V-ing form
I could copulate you could copulate she could copulate we could copulate you could copulate they could copulate	I could be copulating you could be copulating she could be copulating we could be copulating you could be copulating they could be copulating
Perfect	V-ing perfect
I could have copulated you could have copulated she could have copulated we could have copulated you could have copulated they could have copulated	I could have been copulating you could have been copulating she could have been copulating we could have been copulating you could have been copulating they could have been copulating

Negation

Simple form	V-ing form
I couldn't copulate you couldn't copulate she couldn't copulate we couldn't copulate you couldn't copulate they couldn't copulate	I couldn't be copulating you couldn't be copulating she couldn't be copulating we couldn't be copulating you couldn't be copulating they couldn't be copulating
Perfect	V-ing perfect
I couldn't have copulated you couldn't have copulated she couldn't have copulated we couldn't have copulated you couldn't have copulated they couldn't have copulated	I couldn't have been copulating you couldn't have been copulating she couldn't have been copulating we couldn't have been copulating you couldn't have been copulating they couldn't have been copulating

Interrogative form

Simple form	V-ing form
could I copulate? could you copulate? could she copulate? could we copulate? could you copulate? could they copulate?	could I be copulating? could you be copulating? could she be copulating? could we be copulating? could you be copulating? could they be copulating?
Perfect	V-ing perfect
could I have copulated? could you have copulated? could she have copulated? could we have copulated? could you have copulated? could they have copulated?	could I have been copulating? could you have been copulating? could she have been copulating? could we have been copulating? could you have been copulating? could they have been copulating?

Interro-negative form

Simple form	V-ing form
couldn't I copulate? couldn't you copulate? couldn't she copulate? couldn't we copulate? couldn't you copulate? couldn't they copulate?	couldn't I be copulating? couldn't you be copulating? couldn't she be copulating? couldn't we be copulating? couldn't you be copulating? couldn't they be copulating?
Perfect	V-ing perfect
couldn't I have copulated? couldn't you have copulated? couldn't she have copulated? couldn't we have copulated? couldn't you have copulated? couldn't they have copulated?	couldn't I have been copulating? couldn't you have been copulating? couldn't she have been copulating? couldn't we have been copulating? couldn't you have been copulating? couldn't they have been copulating?