I could interdifferentiate you could interdifferentiate she could interdifferentiate we could interdifferentiate you could interdifferentiate they could interdifferentiate
V-ing form
I could be interdifferentiating you could be interdifferentiating she could be interdifferentiating we could be interdifferentiating you could be interdifferentiating they could be interdifferentiating
Perfect
I could have interdifferentiated you could have interdifferentiated she could have interdifferentiated we could have interdifferentiated you could have interdifferentiated they could have interdifferentiated
V-ing perfect
I could have been interdifferentiating you could have been interdifferentiating she could have been interdifferentiating we could have been interdifferentiating you could have been interdifferentiating they could have been interdifferentiating
Negation
Simple form
I couldn't interdifferentiate you couldn't interdifferentiate she couldn't interdifferentiate we couldn't interdifferentiate you couldn't interdifferentiate they couldn't interdifferentiate
V-ing form
I couldn't be interdifferentiating you couldn't be interdifferentiating she couldn't be interdifferentiating we couldn't be interdifferentiating you couldn't be interdifferentiating they couldn't be interdifferentiating
Perfect
I couldn't have interdifferentiated you couldn't have interdifferentiated she couldn't have interdifferentiated we couldn't have interdifferentiated you couldn't have interdifferentiated they couldn't have interdifferentiated
V-ing perfect
I couldn't have been interdifferentiating you couldn't have been interdifferentiating she couldn't have been interdifferentiating we couldn't have been interdifferentiating you couldn't have been interdifferentiating they couldn't have been interdifferentiating
Interrogative form
Simple form
could I interdifferentiate? could you interdifferentiate? could she interdifferentiate? could we interdifferentiate? could you interdifferentiate? could they interdifferentiate?
V-ing form
could I be interdifferentiating? could you be interdifferentiating? could she be interdifferentiating? could we be interdifferentiating? could you be interdifferentiating? could they be interdifferentiating?
Perfect
could I have interdifferentiated? could you have interdifferentiated? could she have interdifferentiated? could we have interdifferentiated? could you have interdifferentiated? could they have interdifferentiated?
V-ing perfect
could I have been interdifferentiating? could you have been interdifferentiating? could she have been interdifferentiating? could we have been interdifferentiating? could you have been interdifferentiating? could they have been interdifferentiating?
Interro-negative form
Simple form
couldn't I interdifferentiate? couldn't you interdifferentiate? couldn't she interdifferentiate? couldn't we interdifferentiate? couldn't you interdifferentiate? couldn't they interdifferentiate?
V-ing form
couldn't I be interdifferentiating? couldn't you be interdifferentiating? couldn't she be interdifferentiating? couldn't we be interdifferentiating? couldn't you be interdifferentiating? couldn't they be interdifferentiating?
Perfect
couldn't I have interdifferentiated? couldn't you have interdifferentiated? couldn't she have interdifferentiated? couldn't we have interdifferentiated? couldn't you have interdifferentiated? couldn't they have interdifferentiated?
V-ing perfect
couldn't I have been interdifferentiating? couldn't you have been interdifferentiating? couldn't she have been interdifferentiating? couldn't we have been interdifferentiating? couldn't you have been interdifferentiating? couldn't they have been interdifferentiating?