English verb conjugation
COULD VAMP

Regular verb: vamp - vamped - vamped

Affirmation

Simple form	V-ing form
I could vamp you could vamp he could vamp we could vamp you could vamp they could vamp	I could be vamping you could be vamping he could be vamping we could be vamping you could be vamping they could be vamping
Perfect	V-ing perfect
I could have vamped you could have vamped he could have vamped we could have vamped you could have vamped they could have vamped	I could have been vamping you could have been vamping he could have been vamping we could have been vamping you could have been vamping they could have been vamping

Negation

Simple form	V-ing form
I couldn't vamp you couldn't vamp he couldn't vamp we couldn't vamp you couldn't vamp they couldn't vamp	I couldn't be vamping you couldn't be vamping he couldn't be vamping we couldn't be vamping you couldn't be vamping they couldn't be vamping
Perfect	V-ing perfect
I couldn't have vamped you couldn't have vamped he couldn't have vamped we couldn't have vamped you couldn't have vamped they couldn't have vamped	I couldn't have been vamping you couldn't have been vamping he couldn't have been vamping we couldn't have been vamping you couldn't have been vamping they couldn't have been vamping

Interrogative form

Simple form	V-ing form
could I vamp? could you vamp? could he vamp? could we vamp? could you vamp? could they vamp?	could I be vamping? could you be vamping? could he be vamping? could we be vamping? could you be vamping? could they be vamping?
Perfect	V-ing perfect
could I have vamped? could you have vamped? could he have vamped? could we have vamped? could you have vamped? could they have vamped?	could I have been vamping? could you have been vamping? could he have been vamping? could we have been vamping? could you have been vamping? could they have been vamping?

Interro-negative form

Simple form	V-ing form
couldn't I vamp? couldn't you vamp? couldn't he vamp? couldn't we vamp? couldn't you vamp? couldn't they vamp?	couldn't I be vamping? couldn't you be vamping? couldn't he be vamping? couldn't we be vamping? couldn't you be vamping? couldn't they be vamping?
Perfect	V-ing perfect
couldn't I have vamped? couldn't you have vamped? couldn't he have vamped? couldn't we have vamped? couldn't you have vamped? couldn't they have vamped?	couldn't I have been vamping? couldn't you have been vamping? couldn't he have been vamping? couldn't we have been vamping? couldn't you have been vamping? couldn't they have been vamping?