Warning, this verb may not exist. Conjugation is given as example.
Affirmation
Simple form
I could dofferentiate you could dofferentiate he could dofferentiate we could dofferentiate you could dofferentiate they could dofferentiate
V-ing form
I could be dofferentiating you could be dofferentiating he could be dofferentiating we could be dofferentiating you could be dofferentiating they could be dofferentiating
Perfect
I could have dofferentiated you could have dofferentiated he could have dofferentiated we could have dofferentiated you could have dofferentiated they could have dofferentiated
V-ing perfect
I could have been dofferentiating you could have been dofferentiating he could have been dofferentiating we could have been dofferentiating you could have been dofferentiating they could have been dofferentiating
Negation
Simple form
I couldn't dofferentiate you couldn't dofferentiate he couldn't dofferentiate we couldn't dofferentiate you couldn't dofferentiate they couldn't dofferentiate
V-ing form
I couldn't be dofferentiating you couldn't be dofferentiating he couldn't be dofferentiating we couldn't be dofferentiating you couldn't be dofferentiating they couldn't be dofferentiating
Perfect
I couldn't have dofferentiated you couldn't have dofferentiated he couldn't have dofferentiated we couldn't have dofferentiated you couldn't have dofferentiated they couldn't have dofferentiated
V-ing perfect
I couldn't have been dofferentiating you couldn't have been dofferentiating he couldn't have been dofferentiating we couldn't have been dofferentiating you couldn't have been dofferentiating they couldn't have been dofferentiating
Interrogative form
Simple form
could I dofferentiate? could you dofferentiate? could he dofferentiate? could we dofferentiate? could you dofferentiate? could they dofferentiate?
V-ing form
could I be dofferentiating? could you be dofferentiating? could he be dofferentiating? could we be dofferentiating? could you be dofferentiating? could they be dofferentiating?
Perfect
could I have dofferentiated? could you have dofferentiated? could he have dofferentiated? could we have dofferentiated? could you have dofferentiated? could they have dofferentiated?
V-ing perfect
could I have been dofferentiating? could you have been dofferentiating? could he have been dofferentiating? could we have been dofferentiating? could you have been dofferentiating? could they have been dofferentiating?
Interro-negative form
Simple form
couldn't I dofferentiate? couldn't you dofferentiate? couldn't he dofferentiate? couldn't we dofferentiate? couldn't you dofferentiate? couldn't they dofferentiate?
V-ing form
couldn't I be dofferentiating? couldn't you be dofferentiating? couldn't he be dofferentiating? couldn't we be dofferentiating? couldn't you be dofferentiating? couldn't they be dofferentiating?
Perfect
couldn't I have dofferentiated? couldn't you have dofferentiated? couldn't he have dofferentiated? couldn't we have dofferentiated? couldn't you have dofferentiated? couldn't they have dofferentiated?
V-ing perfect
couldn't I have been dofferentiating? couldn't you have been dofferentiating? couldn't he have been dofferentiating? couldn't we have been dofferentiating? couldn't you have been dofferentiating? couldn't they have been dofferentiating?