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