English verb conjugation
COULD CLICK

Regular verb: click - clicked - clicked

Affirmation

Simple form	V-ing form
I could click you could click she could click we could click you could click they could click	I could be clicking you could be clicking she could be clicking we could be clicking you could be clicking they could be clicking
Perfect	V-ing perfect
I could have clicked you could have clicked she could have clicked we could have clicked you could have clicked they could have clicked	I could have been clicking you could have been clicking she could have been clicking we could have been clicking you could have been clicking they could have been clicking

Negation

Simple form	V-ing form
I couldn't click you couldn't click she couldn't click we couldn't click you couldn't click they couldn't click	I couldn't be clicking you couldn't be clicking she couldn't be clicking we couldn't be clicking you couldn't be clicking they couldn't be clicking
Perfect	V-ing perfect
I couldn't have clicked you couldn't have clicked she couldn't have clicked we couldn't have clicked you couldn't have clicked they couldn't have clicked	I couldn't have been clicking you couldn't have been clicking she couldn't have been clicking we couldn't have been clicking you couldn't have been clicking they couldn't have been clicking

Interrogative form

Simple form	V-ing form
could I click? could you click? could she click? could we click? could you click? could they click?	could I be clicking? could you be clicking? could she be clicking? could we be clicking? could you be clicking? could they be clicking?
Perfect	V-ing perfect
could I have clicked? could you have clicked? could she have clicked? could we have clicked? could you have clicked? could they have clicked?	could I have been clicking? could you have been clicking? could she have been clicking? could we have been clicking? could you have been clicking? could they have been clicking?

Interro-negative form

Simple form	V-ing form
couldn't I click? couldn't you click? couldn't she click? couldn't we click? couldn't you click? couldn't they click?	couldn't I be clicking? couldn't you be clicking? couldn't she be clicking? couldn't we be clicking? couldn't you be clicking? couldn't they be clicking?
Perfect	V-ing perfect
couldn't I have clicked? couldn't you have clicked? couldn't she have clicked? couldn't we have clicked? couldn't you have clicked? couldn't they have clicked?	couldn't I have been clicking? couldn't you have been clicking? couldn't she have been clicking? couldn't we have been clicking? couldn't you have been clicking? couldn't they have been clicking?