could offend
Regular verb: offend - offended- offended

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could offend
you could offend
she could offend
we could offend
you could offend
they could offend 	I could be offending
you could be offending
she could be offending
we could be offending
you could be offending
they could be offending	I could have offended
you could have offended
she could have offended
we could have offended
you could have offended
they could have offended	I could have been offending
you could have been offending
she could have been offending
we could have been offending
you could have been offending
they could have been offending	

Negation 	
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I couldn't offend
you couldn't offend
she couldn't offend
we couldn't offend
you couldn't offend
they couldn't offend 	I couldn't be offending
you couldn't be offending
she couldn't be offending
we couldn't be offending
you couldn't be offending
they couldn't be offending	I couldn't have offended
you couldn't have offended
she couldn't have offended
we couldn't have offended
you couldn't have offended
they couldn't have offended	I couldn't have been offending
you couldn't have been offending
she couldn't have been offending
we couldn't have been offending
you couldn't have been offending
they couldn't have been offending	

Interrogative form 	
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could I offend?
could you offend?
could she offend?
could we offend?
could you offend?
could they offend? 	could I be offending?
could you be offending?
could she be offending?
could we be offending?
could you be offending?
could they be offending? 	could I have offended?
could you have offended?
could she have offended?
could we have offended?
could you have offended?
could they have offended? 	could I have been offending?
could you have been offending?
could she have been offending?
could we have been offending?
could you have been offending?
could they have been offending? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
couldn't I offend?
couldn't you offend?
couldn't she offend?
couldn't we offend?
couldn't you offend?
couldn't they offend? 	couldn't I be offending?
couldn't you be offending?
couldn't she be offending?
couldn't we be offending?
couldn't you be offending?
couldn't they be offending? 	couldn't I have offended?
couldn't you have offended?
couldn't she have offended?
couldn't we have offended?
couldn't you have offended?
couldn't they have offended? 	couldn't I have been offending?
couldn't you have been offending?
couldn't she have been offending?
couldn't we have been offending?
couldn't you have been offending?
couldn't they have been offending?