I can coexist you can coexist he can coexist we can coexist you can coexist they can coexist
V-ing form
I can be coexisting you can be coexisting he can be coexisting we can be coexisting you can be coexisting they can be coexisting
Perfect
I can have coexisted you can have coexisted he can have coexisted we can have coexisted you can have coexisted they can have coexisted
V-ing perfect
I can have been coexisting you can have been coexisting he can have been coexisting we can have been coexisting you can have been coexisting they can have been coexisting
Negation
Simple form
I can't coexist you can't coexist he can't coexist we can't coexist you can't coexist they can't coexist
V-ing form
I can't be coexisting you can't be coexisting he can't be coexisting we can't be coexisting you can't be coexisting they can't be coexisting
Perfect
I can't have coexisted you can't have coexisted he can't have coexisted we can't have coexisted you can't have coexisted they can't have coexisted
V-ing perfect
I can't have been coexisting you can't have been coexisting he can't have been coexisting we can't have been coexisting you can't have been coexisting they can't have been coexisting
Interrogative form
Simple form
can I coexist? can you coexist? can he coexist? can we coexist? can you coexist? can they coexist?
V-ing form
can I be coexisting? can you be coexisting? can he be coexisting? can we be coexisting? can you be coexisting? can they be coexisting?
Perfect
can I have coexisted? can you have coexisted? can he have coexisted? can we have coexisted? can you have coexisted? can they have coexisted?
V-ing perfect
can I have been coexisting? can you have been coexisting? can he have been coexisting? can we have been coexisting? can you have been coexisting? can they have been coexisting?
Interro-negative form
Simple form
can't I coexist? can't you coexist? can't he coexist? can't we coexist? can't you coexist? can't they coexist?
V-ing form
can't I be coexisting? can't you be coexisting? can't he be coexisting? can't we be coexisting? can't you be coexisting? can't they be coexisting?
Perfect
can't I have coexisted? can't you have coexisted? can't he have coexisted? can't we have coexisted? can't you have coexisted? can't they have coexisted?
V-ing perfect
can't I have been coexisting? can't you have been coexisting? can't he have been coexisting? can't we have been coexisting? can't you have been coexisting? can't they have been coexisting?