English verb conjugation
COULD CLUB

Regular verb: club - clubbed - clubbed

Affirmation

Simple form	V-ing form
I could club you could club she could club we could club you could club they could club	I could be clubbing you could be clubbing she could be clubbing we could be clubbing you could be clubbing they could be clubbing
Perfect	V-ing perfect
I could have clubbed you could have clubbed she could have clubbed we could have clubbed you could have clubbed they could have clubbed	I could have been clubbing you could have been clubbing she could have been clubbing we could have been clubbing you could have been clubbing they could have been clubbing

Negation

Simple form	V-ing form
I couldn't club you couldn't club she couldn't club we couldn't club you couldn't club they couldn't club	I couldn't be clubbing you couldn't be clubbing she couldn't be clubbing we couldn't be clubbing you couldn't be clubbing they couldn't be clubbing
Perfect	V-ing perfect
I couldn't have clubbed you couldn't have clubbed she couldn't have clubbed we couldn't have clubbed you couldn't have clubbed they couldn't have clubbed	I couldn't have been clubbing you couldn't have been clubbing she couldn't have been clubbing we couldn't have been clubbing you couldn't have been clubbing they couldn't have been clubbing

Interrogative form

Simple form	V-ing form
could I club? could you club? could she club? could we club? could you club? could they club?	could I be clubbing? could you be clubbing? could she be clubbing? could we be clubbing? could you be clubbing? could they be clubbing?
Perfect	V-ing perfect
could I have clubbed? could you have clubbed? could she have clubbed? could we have clubbed? could you have clubbed? could they have clubbed?	could I have been clubbing? could you have been clubbing? could she have been clubbing? could we have been clubbing? could you have been clubbing? could they have been clubbing?

Interro-negative form

Simple form	V-ing form
couldn't I club? couldn't you club? couldn't she club? couldn't we club? couldn't you club? couldn't they club?	couldn't I be clubbing? couldn't you be clubbing? couldn't she be clubbing? couldn't we be clubbing? couldn't you be clubbing? couldn't they be clubbing?
Perfect	V-ing perfect
couldn't I have clubbed? couldn't you have clubbed? couldn't she have clubbed? couldn't we have clubbed? couldn't you have clubbed? couldn't they have clubbed?	couldn't I have been clubbing? couldn't you have been clubbing? couldn't she have been clubbing? couldn't we have been clubbing? couldn't you have been clubbing? couldn't they have been clubbing?