could pique
Regular verb: pique - piqued- piqued

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could pique
you could pique
he could pique
we could pique
you could pique
they could pique 	I could be piquing
you could be piquing
he could be piquing
we could be piquing
you could be piquing
they could be piquing	I could have piqued
you could have piqued
he could have piqued
we could have piqued
you could have piqued
they could have piqued	I could have been piquing
you could have been piquing
he could have been piquing
we could have been piquing
you could have been piquing
they could have been piquing	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could not pique
you could not pique
he could not pique
we could not pique
you could not pique
they could not pique 	I could not be piquing
you could not be piquing
he could not be piquing
we could not be piquing
you could not be piquing
they could not be piquing	I could not have piqued
you could not have piqued
he could not have piqued
we could not have piqued
you could not have piqued
they could not have piqued	I could not have been piquing
you could not have been piquing
he could not have been piquing
we could not have been piquing
you could not have been piquing
they could not have been piquing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I pique?
could you pique?
could he pique?
could we pique?
could you pique?
could they pique? 	could I be piquing?
could you be piquing?
could he be piquing?
could we be piquing?
could you be piquing?
could they be piquing? 	could I have piqued?
could you have piqued?
could he have piqued?
could we have piqued?
could you have piqued?
could they have piqued? 	could I have been piquing?
could you have been piquing?
could he have been piquing?
could we have been piquing?
could you have been piquing?
could they have been piquing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I not pique?
could you not pique?
could he not pique?
could we not pique?
could you not pique?
could they not pique? 	could I not be piquing?
could you not be piquing?
could he not be piquing?
could we not be piquing?
could you not be piquing?
could they not be piquing? 	could I not have piqued?
could you not have piqued?
could he not have piqued?
could we not have piqued?
could you not have piqued?
could they not have piqued? 	could I not have been piquing?
could you not have been piquing?
could he not have been piquing?
could we not have been piquing?
could you not have been piquing?
could they not have been piquing?