I can offend you can offend he can offend we can offend you can offend they can offend
V-ing form
I can be offending you can be offending he can be offending we can be offending you can be offending they can be offending
Perfect
I can have offended you can have offended he can have offended we can have offended you can have offended they can have offended
V-ing perfect
I can have been offending you can have been offending he can have been offending we can have been offending you can have been offending they can have been offending
Negation
Simple form
I can't offend you can't offend he can't offend we can't offend you can't offend they can't offend
V-ing form
I can't be offending you can't be offending he can't be offending we can't be offending you can't be offending they can't be offending
Perfect
I can't have offended you can't have offended he can't have offended we can't have offended you can't have offended they can't have offended
V-ing perfect
I can't have been offending you can't have been offending he can't have been offending we can't have been offending you can't have been offending they can't have been offending
Interrogative form
Simple form
can I offend? can you offend? can he offend? can we offend? can you offend? can they offend?
V-ing form
can I be offending? can you be offending? can he be offending? can we be offending? can you be offending? can they be offending?
Perfect
can I have offended? can you have offended? can he have offended? can we have offended? can you have offended? can they have offended?
V-ing perfect
can I have been offending? can you have been offending? can he have been offending? can we have been offending? can you have been offending? can they have been offending?
Interro-negative form
Simple form
can't I offend? can't you offend? can't he offend? can't we offend? can't you offend? can't they offend?
V-ing form
can't I be offending? can't you be offending? can't he be offending? can't we be offending? can't you be offending? can't they be offending?
Perfect
can't I have offended? can't you have offended? can't he have offended? can't we have offended? can't you have offended? can't they have offended?
V-ing perfect
can't I have been offending? can't you have been offending? can't he have been offending? can't we have been offending? can't you have been offending? can't they have been offending?