English verb conjugation
COULD NIGHTCLUB

Regular verb: nightclub - nightclubed - nightclubed

Affirmation

Simple form	V-ing form
I could nightclub you could nightclub he could nightclub we could nightclub you could nightclub they could nightclub	I could be nightclubing you could be nightclubing he could be nightclubing we could be nightclubing you could be nightclubing they could be nightclubing
Perfect	V-ing perfect
I could have nightclubed you could have nightclubed he could have nightclubed we could have nightclubed you could have nightclubed they could have nightclubed	I could have been nightclubing you could have been nightclubing he could have been nightclubing we could have been nightclubing you could have been nightclubing they could have been nightclubing

Negation

Simple form	V-ing form
I couldn't nightclub you couldn't nightclub he couldn't nightclub we couldn't nightclub you couldn't nightclub they couldn't nightclub	I couldn't be nightclubing you couldn't be nightclubing he couldn't be nightclubing we couldn't be nightclubing you couldn't be nightclubing they couldn't be nightclubing
Perfect	V-ing perfect
I couldn't have nightclubed you couldn't have nightclubed he couldn't have nightclubed we couldn't have nightclubed you couldn't have nightclubed they couldn't have nightclubed	I couldn't have been nightclubing you couldn't have been nightclubing he couldn't have been nightclubing we couldn't have been nightclubing you couldn't have been nightclubing they couldn't have been nightclubing

Interrogative form

Simple form	V-ing form
could I nightclub? could you nightclub? could he nightclub? could we nightclub? could you nightclub? could they nightclub?	could I be nightclubing? could you be nightclubing? could he be nightclubing? could we be nightclubing? could you be nightclubing? could they be nightclubing?
Perfect	V-ing perfect
could I have nightclubed? could you have nightclubed? could he have nightclubed? could we have nightclubed? could you have nightclubed? could they have nightclubed?	could I have been nightclubing? could you have been nightclubing? could he have been nightclubing? could we have been nightclubing? could you have been nightclubing? could they have been nightclubing?

Interro-negative form

Simple form	V-ing form
couldn't I nightclub? couldn't you nightclub? couldn't he nightclub? couldn't we nightclub? couldn't you nightclub? couldn't they nightclub?	couldn't I be nightclubing? couldn't you be nightclubing? couldn't he be nightclubing? couldn't we be nightclubing? couldn't you be nightclubing? couldn't they be nightclubing?
Perfect	V-ing perfect
couldn't I have nightclubed? couldn't you have nightclubed? couldn't he have nightclubed? couldn't we have nightclubed? couldn't you have nightclubed? couldn't they have nightclubed?	couldn't I have been nightclubing? couldn't you have been nightclubing? couldn't he have been nightclubing? couldn't we have been nightclubing? couldn't you have been nightclubing? couldn't they have been nightclubing?