I can exfoliate you can exfoliate he can exfoliate we can exfoliate you can exfoliate they can exfoliate
V-ing form
I can be exfoliating you can be exfoliating he can be exfoliating we can be exfoliating you can be exfoliating they can be exfoliating
Perfect
I can have exfoliated you can have exfoliated he can have exfoliated we can have exfoliated you can have exfoliated they can have exfoliated
V-ing perfect
I can have been exfoliating you can have been exfoliating he can have been exfoliating we can have been exfoliating you can have been exfoliating they can have been exfoliating
Negation
Simple form
I cannot exfoliate you cannot exfoliate he cannot exfoliate we cannot exfoliate you cannot exfoliate they cannot exfoliate
V-ing form
I cannot be exfoliating you cannot be exfoliating he cannot be exfoliating we cannot be exfoliating you cannot be exfoliating they cannot be exfoliating
Perfect
I cannot have exfoliated you cannot have exfoliated he cannot have exfoliated we cannot have exfoliated you cannot have exfoliated they cannot have exfoliated
V-ing perfect
I cannot have been exfoliating you cannot have been exfoliating he cannot have been exfoliating we cannot have been exfoliating you cannot have been exfoliating they cannot have been exfoliating
Interrogative form
Simple form
can I exfoliate? can you exfoliate? can he exfoliate? can we exfoliate? can you exfoliate? can they exfoliate?
V-ing form
can I be exfoliating? can you be exfoliating? can he be exfoliating? can we be exfoliating? can you be exfoliating? can they be exfoliating?
Perfect
can I have exfoliated? can you have exfoliated? can he have exfoliated? can we have exfoliated? can you have exfoliated? can they have exfoliated?
V-ing perfect
can I have been exfoliating? can you have been exfoliating? can he have been exfoliating? can we have been exfoliating? can you have been exfoliating? can they have been exfoliating?
Interro-negative form
Simple form
can I not exfoliate? can you not exfoliate? can he not exfoliate? can we not exfoliate? can you not exfoliate? can they not exfoliate?
V-ing form
can I not be exfoliating? can you not be exfoliating? can he not be exfoliating? can we not be exfoliating? can you not be exfoliating? can they not be exfoliating?
Perfect
can I not have exfoliated? can you not have exfoliated? can he not have exfoliated? can we not have exfoliated? can you not have exfoliated? can they not have exfoliated?
V-ing perfect
can I not have been exfoliating? can you not have been exfoliating? can he not have been exfoliating? can we not have been exfoliating? can you not have been exfoliating? can they not have been exfoliating?