could riposte
Regular verb: riposte - riposted- riposted

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could riposte
you could riposte
he could riposte
we could riposte
you could riposte
they could riposte 	I could be riposting
you could be riposting
he could be riposting
we could be riposting
you could be riposting
they could be riposting	I could have riposted
you could have riposted
he could have riposted
we could have riposted
you could have riposted
they could have riposted	I could have been riposting
you could have been riposting
he could have been riposting
we could have been riposting
you could have been riposting
they could have been riposting	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I couldn't riposte
you couldn't riposte
he couldn't riposte
we couldn't riposte
you couldn't riposte
they couldn't riposte 	I couldn't be riposting
you couldn't be riposting
he couldn't be riposting
we couldn't be riposting
you couldn't be riposting
they couldn't be riposting	I couldn't have riposted
you couldn't have riposted
he couldn't have riposted
we couldn't have riposted
you couldn't have riposted
they couldn't have riposted	I couldn't have been riposting
you couldn't have been riposting
he couldn't have been riposting
we couldn't have been riposting
you couldn't have been riposting
they couldn't have been riposting	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I riposte?
could you riposte?
could he riposte?
could we riposte?
could you riposte?
could they riposte? 	could I be riposting?
could you be riposting?
could he be riposting?
could we be riposting?
could you be riposting?
could they be riposting? 	could I have riposted?
could you have riposted?
could he have riposted?
could we have riposted?
could you have riposted?
could they have riposted? 	could I have been riposting?
could you have been riposting?
could he have been riposting?
could we have been riposting?
could you have been riposting?
could they have been riposting? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
couldn't I riposte?
couldn't you riposte?
couldn't he riposte?
couldn't we riposte?
couldn't you riposte?
couldn't they riposte? 	couldn't I be riposting?
couldn't you be riposting?
couldn't he be riposting?
couldn't we be riposting?
couldn't you be riposting?
couldn't they be riposting? 	couldn't I have riposted?
couldn't you have riposted?
couldn't he have riposted?
couldn't we have riposted?
couldn't you have riposted?
couldn't they have riposted? 	couldn't I have been riposting?
couldn't you have been riposting?
couldn't he have been riposting?
couldn't we have been riposting?
couldn't you have been riposting?
couldn't they have been riposting?