I can mend you can mend he can mend we can mend you can mend they can mend
V-ing form
I can be mending you can be mending he can be mending we can be mending you can be mending they can be mending
Perfect
I can have mended you can have mended he can have mended we can have mended you can have mended they can have mended
V-ing perfect
I can have been mending you can have been mending he can have been mending we can have been mending you can have been mending they can have been mending
Negation
Simple form
I can't mend you can't mend he can't mend we can't mend you can't mend they can't mend
V-ing form
I can't be mending you can't be mending he can't be mending we can't be mending you can't be mending they can't be mending
Perfect
I can't have mended you can't have mended he can't have mended we can't have mended you can't have mended they can't have mended
V-ing perfect
I can't have been mending you can't have been mending he can't have been mending we can't have been mending you can't have been mending they can't have been mending
Interrogative form
Simple form
can I mend? can you mend? can he mend? can we mend? can you mend? can they mend?
V-ing form
can I be mending? can you be mending? can he be mending? can we be mending? can you be mending? can they be mending?
Perfect
can I have mended? can you have mended? can he have mended? can we have mended? can you have mended? can they have mended?
V-ing perfect
can I have been mending? can you have been mending? can he have been mending? can we have been mending? can you have been mending? can they have been mending?
Interro-negative form
Simple form
can't I mend? can't you mend? can't he mend? can't we mend? can't you mend? can't they mend?
V-ing form
can't I be mending? can't you be mending? can't he be mending? can't we be mending? can't you be mending? can't they be mending?
Perfect
can't I have mended? can't you have mended? can't he have mended? can't we have mended? can't you have mended? can't they have mended?
V-ing perfect
can't I have been mending? can't you have been mending? can't he have been mending? can't we have been mending? can't you have been mending? can't they have been mending?