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 couldn't pique
you couldn't pique
he couldn't pique
we couldn't pique
you couldn't pique
they couldn't pique 	I couldn't be piquing
you couldn't be piquing
he couldn't be piquing
we couldn't be piquing
you couldn't be piquing
they couldn't be piquing	I couldn't have piqued
you couldn't have piqued
he couldn't have piqued
we couldn't have piqued
you couldn't have piqued
they couldn't have piqued	I couldn't have been piquing
you couldn't have been piquing
he couldn't have been piquing
we couldn't have been piquing
you couldn't have been piquing
they couldn't 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 	
couldn't I pique?
couldn't you pique?
couldn't he pique?
couldn't we pique?
couldn't you pique?
couldn't they pique? 	couldn't I be piquing?
couldn't you be piquing?
couldn't he be piquing?
couldn't we be piquing?
couldn't you be piquing?
couldn't they be piquing? 	couldn't I have piqued?
couldn't you have piqued?
couldn't he have piqued?
couldn't we have piqued?
couldn't you have piqued?
couldn't they have piqued? 	couldn't I have been piquing?
couldn't you have been piquing?
couldn't he have been piquing?
couldn't we have been piquing?
couldn't you have been piquing?
couldn't they have been piquing?