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 can't collocate you can't collocate he can't collocate we can't collocate you can't collocate they can't collocate
V-ing form
I can't be collocating you can't be collocating he can't be collocating we can't be collocating you can't be collocating they can't be collocating
Perfect
I can't have collocated you can't have collocated he can't have collocated we can't have collocated you can't have collocated they can't have collocated
V-ing perfect
I can't have been collocating you can't have been collocating he can't have been collocating we can't have been collocating you can't have been collocating they can't 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't I collocate? can't you collocate? can't he collocate? can't we collocate? can't you collocate? can't they collocate?
V-ing form
can't I be collocating? can't you be collocating? can't he be collocating? can't we be collocating? can't you be collocating? can't they be collocating?
Perfect
can't I have collocated? can't you have collocated? can't he have collocated? can't we have collocated? can't you have collocated? can't they have collocated?
V-ing perfect
can't I have been collocating? can't you have been collocating? can't he have been collocating? can't we have been collocating? can't you have been collocating? can't they have been collocating?