English verb conjugation
COULD COLLUMATE

Regular verb: collumate - collumated - collumated

Affirmation

Simple form	V-ing form
I could collumate you could collumate he could collumate we could collumate you could collumate they could collumate	I could be collumating you could be collumating he could be collumating we could be collumating you could be collumating they could be collumating
Perfect	V-ing perfect
I could have collumated you could have collumated he could have collumated we could have collumated you could have collumated they could have collumated	I could have been collumating you could have been collumating he could have been collumating we could have been collumating you could have been collumating they could have been collumating

Negation

Simple form	V-ing form
I couldn't collumate you couldn't collumate he couldn't collumate we couldn't collumate you couldn't collumate they couldn't collumate	I couldn't be collumating you couldn't be collumating he couldn't be collumating we couldn't be collumating you couldn't be collumating they couldn't be collumating
Perfect	V-ing perfect
I couldn't have collumated you couldn't have collumated he couldn't have collumated we couldn't have collumated you couldn't have collumated they couldn't have collumated	I couldn't have been collumating you couldn't have been collumating he couldn't have been collumating we couldn't have been collumating you couldn't have been collumating they couldn't have been collumating

Interrogative form

Simple form	V-ing form
could I collumate? could you collumate? could he collumate? could we collumate? could you collumate? could they collumate?	could I be collumating? could you be collumating? could he be collumating? could we be collumating? could you be collumating? could they be collumating?
Perfect	V-ing perfect
could I have collumated? could you have collumated? could he have collumated? could we have collumated? could you have collumated? could they have collumated?	could I have been collumating? could you have been collumating? could he have been collumating? could we have been collumating? could you have been collumating? could they have been collumating?

Interro-negative form

Simple form	V-ing form
couldn't I collumate? couldn't you collumate? couldn't he collumate? couldn't we collumate? couldn't you collumate? couldn't they collumate?	couldn't I be collumating? couldn't you be collumating? couldn't he be collumating? couldn't we be collumating? couldn't you be collumating? couldn't they be collumating?
Perfect	V-ing perfect
couldn't I have collumated? couldn't you have collumated? couldn't he have collumated? couldn't we have collumated? couldn't you have collumated? couldn't they have collumated?	couldn't I have been collumating? couldn't you have been collumating? couldn't he have been collumating? couldn't we have been collumating? couldn't you have been collumating? couldn't they have been collumating?