I can tire you can tire he can tire we can tire you can tire they can tire
V-ing form
I can be tiring you can be tiring he can be tiring we can be tiring you can be tiring they can be tiring
Perfect
I can have tired you can have tired he can have tired we can have tired you can have tired they can have tired
V-ing perfect
I can have been tiring you can have been tiring he can have been tiring we can have been tiring you can have been tiring they can have been tiring
Negation
Simple form
I cannot tire you cannot tire he cannot tire we cannot tire you cannot tire they cannot tire
V-ing form
I cannot be tiring you cannot be tiring he cannot be tiring we cannot be tiring you cannot be tiring they cannot be tiring
Perfect
I cannot have tired you cannot have tired he cannot have tired we cannot have tired you cannot have tired they cannot have tired
V-ing perfect
I cannot have been tiring you cannot have been tiring he cannot have been tiring we cannot have been tiring you cannot have been tiring they cannot have been tiring
Interrogative form
Simple form
can I tire? can you tire? can he tire? can we tire? can you tire? can they tire?
V-ing form
can I be tiring? can you be tiring? can he be tiring? can we be tiring? can you be tiring? can they be tiring?
Perfect
can I have tired? can you have tired? can he have tired? can we have tired? can you have tired? can they have tired?
V-ing perfect
can I have been tiring? can you have been tiring? can he have been tiring? can we have been tiring? can you have been tiring? can they have been tiring?
Interro-negative form
Simple form
can I not tire? can you not tire? can he not tire? can we not tire? can you not tire? can they not tire?
V-ing form
can I not be tiring? can you not be tiring? can he not be tiring? can we not be tiring? can you not be tiring? can they not be tiring?
Perfect
can I not have tired? can you not have tired? can he not have tired? can we not have tired? can you not have tired? can they not have tired?
V-ing perfect
can I not have been tiring? can you not have been tiring? can he not have been tiring? can we not have been tiring? can you not have been tiring? can they not have been tiring?