I can overextend you can overextend she can overextend we can overextend you can overextend they can overextend
V-ing form
I can be overextending you can be overextending she can be overextending we can be overextending you can be overextending they can be overextending
Perfect
I can have overextended you can have overextended she can have overextended we can have overextended you can have overextended they can have overextended
V-ing perfect
I can have been overextending you can have been overextending she can have been overextending we can have been overextending you can have been overextending they can have been overextending
Negation
Simple form
I can't overextend you can't overextend she can't overextend we can't overextend you can't overextend they can't overextend
V-ing form
I can't be overextending you can't be overextending she can't be overextending we can't be overextending you can't be overextending they can't be overextending
Perfect
I can't have overextended you can't have overextended she can't have overextended we can't have overextended you can't have overextended they can't have overextended
V-ing perfect
I can't have been overextending you can't have been overextending she can't have been overextending we can't have been overextending you can't have been overextending they can't have been overextending
Interrogative form
Simple form
can I overextend? can you overextend? can she overextend? can we overextend? can you overextend? can they overextend?
V-ing form
can I be overextending? can you be overextending? can she be overextending? can we be overextending? can you be overextending? can they be overextending?
Perfect
can I have overextended? can you have overextended? can she have overextended? can we have overextended? can you have overextended? can they have overextended?
V-ing perfect
can I have been overextending? can you have been overextending? can she have been overextending? can we have been overextending? can you have been overextending? can they have been overextending?
Interro-negative form
Simple form
can't I overextend? can't you overextend? can't she overextend? can't we overextend? can't you overextend? can't they overextend?
V-ing form
can't I be overextending? can't you be overextending? can't she be overextending? can't we be overextending? can't you be overextending? can't they be overextending?
Perfect
can't I have overextended? can't you have overextended? can't she have overextended? can't we have overextended? can't you have overextended? can't they have overextended?
V-ing perfect
can't I have been overextending? can't you have been overextending? can't she have been overextending? can't we have been overextending? can't you have been overextending? can't they have been overextending?