I can chow you can chow he can chow we can chow you can chow they can chow
V-ing form
I can be chowing you can be chowing he can be chowing we can be chowing you can be chowing they can be chowing
Perfect
I can have chowed you can have chowed he can have chowed we can have chowed you can have chowed they can have chowed
V-ing perfect
I can have been chowing you can have been chowing he can have been chowing we can have been chowing you can have been chowing they can have been chowing
Negation
Simple form
I cannot chow you cannot chow he cannot chow we cannot chow you cannot chow they cannot chow
V-ing form
I cannot be chowing you cannot be chowing he cannot be chowing we cannot be chowing you cannot be chowing they cannot be chowing
Perfect
I cannot have chowed you cannot have chowed he cannot have chowed we cannot have chowed you cannot have chowed they cannot have chowed
V-ing perfect
I cannot have been chowing you cannot have been chowing he cannot have been chowing we cannot have been chowing you cannot have been chowing they cannot have been chowing
Interrogative form
Simple form
can I chow? can you chow? can he chow? can we chow? can you chow? can they chow?
V-ing form
can I be chowing? can you be chowing? can he be chowing? can we be chowing? can you be chowing? can they be chowing?
Perfect
can I have chowed? can you have chowed? can he have chowed? can we have chowed? can you have chowed? can they have chowed?
V-ing perfect
can I have been chowing? can you have been chowing? can he have been chowing? can we have been chowing? can you have been chowing? can they have been chowing?
Interro-negative form
Simple form
can I not chow? can you not chow? can he not chow? can we not chow? can you not chow? can they not chow?
V-ing form
can I not be chowing? can you not be chowing? can he not be chowing? can we not be chowing? can you not be chowing? can they not be chowing?
Perfect
can I not have chowed? can you not have chowed? can he not have chowed? can we not have chowed? can you not have chowed? can they not have chowed?
V-ing perfect
can I not have been chowing? can you not have been chowing? can he not have been chowing? can we not have been chowing? can you not have been chowing? can they not have been chowing?