I can butylate you can butylate he can butylate we can butylate you can butylate they can butylate
V-ing form
I can be butylating you can be butylating he can be butylating we can be butylating you can be butylating they can be butylating
Perfect
I can have butylated you can have butylated he can have butylated we can have butylated you can have butylated they can have butylated
V-ing perfect
I can have been butylating you can have been butylating he can have been butylating we can have been butylating you can have been butylating they can have been butylating
Negation
Simple form
I cannot butylate you cannot butylate he cannot butylate we cannot butylate you cannot butylate they cannot butylate
V-ing form
I cannot be butylating you cannot be butylating he cannot be butylating we cannot be butylating you cannot be butylating they cannot be butylating
Perfect
I cannot have butylated you cannot have butylated he cannot have butylated we cannot have butylated you cannot have butylated they cannot have butylated
V-ing perfect
I cannot have been butylating you cannot have been butylating he cannot have been butylating we cannot have been butylating you cannot have been butylating they cannot have been butylating
Interrogative form
Simple form
can I butylate? can you butylate? can he butylate? can we butylate? can you butylate? can they butylate?
V-ing form
can I be butylating? can you be butylating? can he be butylating? can we be butylating? can you be butylating? can they be butylating?
Perfect
can I have butylated? can you have butylated? can he have butylated? can we have butylated? can you have butylated? can they have butylated?
V-ing perfect
can I have been butylating? can you have been butylating? can he have been butylating? can we have been butylating? can you have been butylating? can they have been butylating?
Interro-negative form
Simple form
can I not butylate? can you not butylate? can he not butylate? can we not butylate? can you not butylate? can they not butylate?
V-ing form
can I not be butylating? can you not be butylating? can he not be butylating? can we not be butylating? can you not be butylating? can they not be butylating?
Perfect
can I not have butylated? can you not have butylated? can he not have butylated? can we not have butylated? can you not have butylated? can they not have butylated?
V-ing perfect
can I not have been butylating? can you not have been butylating? can he not have been butylating? can we not have been butylating? can you not have been butylating? can they not have been butylating?