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 couldn't insult
you couldn't insult
he couldn't insult
we couldn't insult
you couldn't insult
they couldn't insult 	I couldn't be insulting
you couldn't be insulting
he couldn't be insulting
we couldn't be insulting
you couldn't be insulting
they couldn't be insulting	I couldn't have insulted
you couldn't have insulted
he couldn't have insulted
we couldn't have insulted
you couldn't have insulted
they couldn't have insulted	I couldn't have been insulting
you couldn't have been insulting
he couldn't have been insulting
we couldn't have been insulting
you couldn't have been insulting
they couldn't 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 	
couldn't I insult?
couldn't you insult?
couldn't he insult?
couldn't we insult?
couldn't you insult?
couldn't they insult? 	couldn't I be insulting?
couldn't you be insulting?
couldn't he be insulting?
couldn't we be insulting?
couldn't you be insulting?
couldn't they be insulting? 	couldn't I have insulted?
couldn't you have insulted?
couldn't he have insulted?
couldn't we have insulted?
couldn't you have insulted?
couldn't they have insulted? 	couldn't I have been insulting?
couldn't you have been insulting?
couldn't he have been insulting?
couldn't we have been insulting?
couldn't you have been insulting?
couldn't they have been insulting?