I can collocate you can collocate he can collocate we can collocate you can collocate they can collocate
V-ing form
I can be collocating you can be collocating he can be collocating we can be collocating you can be collocating they can be collocating
Perfect
I can have collocated you can have collocated he can have collocated we can have collocated you can have collocated they can have collocated
V-ing perfect
I can have been collocating you can have been collocating he can have been collocating we can have been collocating you can have been collocating they can have been collocating
Negation
Simple form
I cannot collocate you cannot collocate he cannot collocate we cannot collocate you cannot collocate they cannot collocate
V-ing form
I cannot be collocating you cannot be collocating he cannot be collocating we cannot be collocating you cannot be collocating they cannot be collocating
Perfect
I cannot have collocated you cannot have collocated he cannot have collocated we cannot have collocated you cannot have collocated they cannot have collocated
V-ing perfect
I cannot have been collocating you cannot have been collocating he cannot have been collocating we cannot have been collocating you cannot have been collocating they cannot have been collocating
Interrogative form
Simple form
can I collocate? can you collocate? can he collocate? can we collocate? can you collocate? can they collocate?
V-ing form
can I be collocating? can you be collocating? can he be collocating? can we be collocating? can you be collocating? can they be collocating?
Perfect
can I have collocated? can you have collocated? can he have collocated? can we have collocated? can you have collocated? can they have collocated?
V-ing perfect
can I have been collocating? can you have been collocating? can he have been collocating? can we have been collocating? can you have been collocating? can they have been collocating?
Interro-negative form
Simple form
can I not collocate? can you not collocate? can he not collocate? can we not collocate? can you not collocate? can they not collocate?
V-ing form
can I not be collocating? can you not be collocating? can he not be collocating? can we not be collocating? can you not be collocating? can they not be collocating?
Perfect
can I not have collocated? can you not have collocated? can he not have collocated? can we not have collocated? can you not have collocated? can they not have collocated?
V-ing perfect
can I not have been collocating? can you not have been collocating? can he not have been collocating? can we not have been collocating? can you not have been collocating? can they not have been collocating?