I can cook you can cook she can cook we can cook you can cook they can cook
V-ing form
I can be cooking you can be cooking she can be cooking we can be cooking you can be cooking they can be cooking
Perfect
I can have cooked you can have cooked she can have cooked we can have cooked you can have cooked they can have cooked
V-ing perfect
I can have been cooking you can have been cooking she can have been cooking we can have been cooking you can have been cooking they can have been cooking
Negation
Simple form
I cannot cook you cannot cook she cannot cook we cannot cook you cannot cook they cannot cook
V-ing form
I cannot be cooking you cannot be cooking she cannot be cooking we cannot be cooking you cannot be cooking they cannot be cooking
Perfect
I cannot have cooked you cannot have cooked she cannot have cooked we cannot have cooked you cannot have cooked they cannot have cooked
V-ing perfect
I cannot have been cooking you cannot have been cooking she cannot have been cooking we cannot have been cooking you cannot have been cooking they cannot have been cooking
Interrogative form
Simple form
can I cook? can you cook? can she cook? can we cook? can you cook? can they cook?
V-ing form
can I be cooking? can you be cooking? can she be cooking? can we be cooking? can you be cooking? can they be cooking?
Perfect
can I have cooked? can you have cooked? can she have cooked? can we have cooked? can you have cooked? can they have cooked?
V-ing perfect
can I have been cooking? can you have been cooking? can she have been cooking? can we have been cooking? can you have been cooking? can they have been cooking?
Interro-negative form
Simple form
can I not cook? can you not cook? can she not cook? can we not cook? can you not cook? can they not cook?
V-ing form
can I not be cooking? can you not be cooking? can she not be cooking? can we not be cooking? can you not be cooking? can they not be cooking?
Perfect
can I not have cooked? can you not have cooked? can she not have cooked? can we not have cooked? can you not have cooked? can they not have cooked?
V-ing perfect
can I not have been cooking? can you not have been cooking? can she not have been cooking? can we not have been cooking? can you not have been cooking? can they not have been cooking?