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 couldn't graduate gradate you couldn't graduate gradate he couldn't graduate gradate we couldn't graduate gradate you couldn't graduate gradate they couldn't graduate gradate
V-ing form
I couldn't be graduate gradating you couldn't be graduate gradating he couldn't be graduate gradating we couldn't be graduate gradating you couldn't be graduate gradating they couldn't be graduate gradating
Perfect
I couldn't have graduate gradated you couldn't have graduate gradated he couldn't have graduate gradated we couldn't have graduate gradated you couldn't have graduate gradated they couldn't have graduate gradated
V-ing perfect
I couldn't have been graduate gradating you couldn't have been graduate gradating he couldn't have been graduate gradating we couldn't have been graduate gradating you couldn't have been graduate gradating they couldn't 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
couldn't I graduate gradate? couldn't you graduate gradate? couldn't he graduate gradate? couldn't we graduate gradate? couldn't you graduate gradate? couldn't they graduate gradate?
V-ing form
couldn't I be graduate gradating? couldn't you be graduate gradating? couldn't he be graduate gradating? couldn't we be graduate gradating? couldn't you be graduate gradating? couldn't they be graduate gradating?
Perfect
couldn't I have graduate gradated? couldn't you have graduate gradated? couldn't he have graduate gradated? couldn't we have graduate gradated? couldn't you have graduate gradated? couldn't they have graduate gradated?
V-ing perfect
couldn't I have been graduate gradating? couldn't you have been graduate gradating? couldn't he have been graduate gradating? couldn't we have been graduate gradating? couldn't you have been graduate gradating? couldn't they have been graduate gradating?