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 can't tire you can't tire he can't tire we can't tire you can't tire they can't tire
V-ing form
I can't be tiring you can't be tiring he can't be tiring we can't be tiring you can't be tiring they can't be tiring
Perfect
I can't have tired you can't have tired he can't have tired we can't have tired you can't have tired they can't have tired
V-ing perfect
I can't have been tiring you can't have been tiring he can't have been tiring we can't have been tiring you can't have been tiring they can't 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't I tire? can't you tire? can't he tire? can't we tire? can't you tire? can't they tire?
V-ing form
can't I be tiring? can't you be tiring? can't he be tiring? can't we be tiring? can't you be tiring? can't they be tiring?
Perfect
can't I have tired? can't you have tired? can't he have tired? can't we have tired? can't you have tired? can't they have tired?
V-ing perfect
can't I have been tiring? can't you have been tiring? can't he have been tiring? can't we have been tiring? can't you have been tiring? can't they have been tiring?