could insult
Regular verb: insult - insulted- insulted

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could insult
you could insult
he could insult
we could insult
you could insult
they could insult 	I could be insulting
you could be insulting
he could be insulting
we could be insulting
you could be insulting
they could be insulting	I could have insulted
you could have insulted
he could have insulted
we could have insulted
you could have insulted
they could have insulted	I could have been insulting
you could have been insulting
he could have been insulting
we could have been insulting
you could have been insulting
they could have been insulting	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could not insult
you could not insult
he could not insult
we could not insult
you could not insult
they could not insult 	I could not be insulting
you could not be insulting
he could not be insulting
we could not be insulting
you could not be insulting
they could not be insulting	I could not have insulted
you could not have insulted
he could not have insulted
we could not have insulted
you could not have insulted
they could not have insulted	I could not have been insulting
you could not have been insulting
he could not have been insulting
we could not have been insulting
you could not have been insulting
they could not have been insulting	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I insult?
could you insult?
could he insult?
could we insult?
could you insult?
could they insult? 	could I be insulting?
could you be insulting?
could he be insulting?
could we be insulting?
could you be insulting?
could they be insulting? 	could I have insulted?
could you have insulted?
could he have insulted?
could we have insulted?
could you have insulted?
could they have insulted? 	could I have been insulting?
could you have been insulting?
could he have been insulting?
could we have been insulting?
could you have been insulting?
could they have been insulting? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I not insult?
could you not insult?
could he not insult?
could we not insult?
could you not insult?
could they not insult? 	could I not be insulting?
could you not be insulting?
could he not be insulting?
could we not be insulting?
could you not be insulting?
could they not be insulting? 	could I not have insulted?
could you not have insulted?
could he not have insulted?
could we not have insulted?
could you not have insulted?
could they not have insulted? 	could I not have been insulting?
could you not have been insulting?
could he not have been insulting?
could we not have been insulting?
could you not have been insulting?
could they not have been insulting?