Warning, this verb may not exist. Conjugation is given as example.
Affirmation
Simple form
I could graduate gradate you could graduate gradate he could graduate gradate we could graduate gradate you could graduate gradate they could graduate gradate
V-ing form
I could be graduate gradating you could be graduate gradating he could be graduate gradating we could be graduate gradating you could be graduate gradating they could be graduate gradating
Perfect
I could have graduate gradated you could have graduate gradated he could have graduate gradated we could have graduate gradated you could have graduate gradated they could have graduate gradated
V-ing perfect
I could have been graduate gradating you could have been graduate gradating he could have been graduate gradating we could have been graduate gradating you could have been graduate gradating they could have been graduate gradating
Negation
Simple form
I could not graduate gradate you could not graduate gradate he could not graduate gradate we could not graduate gradate you could not graduate gradate they could not graduate gradate
V-ing form
I could not be graduate gradating you could not be graduate gradating he could not be graduate gradating we could not be graduate gradating you could not be graduate gradating they could not be graduate gradating
Perfect
I could not have graduate gradated you could not have graduate gradated he could not have graduate gradated we could not have graduate gradated you could not have graduate gradated they could not have graduate gradated
V-ing perfect
I could not have been graduate gradating you could not have been graduate gradating he could not have been graduate gradating we could not have been graduate gradating you could not have been graduate gradating they could not have been graduate gradating
Interrogative form
Simple form
could I graduate gradate? could you graduate gradate? could he graduate gradate? could we graduate gradate? could you graduate gradate? could they graduate gradate?
V-ing form
could I be graduate gradating? could you be graduate gradating? could he be graduate gradating? could we be graduate gradating? could you be graduate gradating? could they be graduate gradating?
Perfect
could I have graduate gradated? could you have graduate gradated? could he have graduate gradated? could we have graduate gradated? could you have graduate gradated? could they have graduate gradated?
V-ing perfect
could I have been graduate gradating? could you have been graduate gradating? could he have been graduate gradating? could we have been graduate gradating? could you have been graduate gradating? could they have been graduate gradating?
Interro-negative form
Simple form
could I not graduate gradate? could you not graduate gradate? could he not graduate gradate? could we not graduate gradate? could you not graduate gradate? could they not graduate gradate?
V-ing form
could I not be graduate gradating? could you not be graduate gradating? could he not be graduate gradating? could we not be graduate gradating? could you not be graduate gradating? could they not be graduate gradating?
Perfect
could I not have graduate gradated? could you not have graduate gradated? could he not have graduate gradated? could we not have graduate gradated? could you not have graduate gradated? could they not have graduate gradated?
V-ing perfect
could I not have been graduate gradating? could you not have been graduate gradating? could he not have been graduate gradating? could we not have been graduate gradating? could you not have been graduate gradating? could they not have been graduate gradating?