could pronate
Regular verb: pronate - pronated- pronated

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could pronate
you could pronate
he could pronate
we could pronate
you could pronate
they could pronate 	I could be pronating
you could be pronating
he could be pronating
we could be pronating
you could be pronating
they could be pronating	I could have pronated
you could have pronated
he could have pronated
we could have pronated
you could have pronated
they could have pronated	I could have been pronating
you could have been pronating
he could have been pronating
we could have been pronating
you could have been pronating
they could have been pronating	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I couldn't pronate
you couldn't pronate
he couldn't pronate
we couldn't pronate
you couldn't pronate
they couldn't pronate 	I couldn't be pronating
you couldn't be pronating
he couldn't be pronating
we couldn't be pronating
you couldn't be pronating
they couldn't be pronating	I couldn't have pronated
you couldn't have pronated
he couldn't have pronated
we couldn't have pronated
you couldn't have pronated
they couldn't have pronated	I couldn't have been pronating
you couldn't have been pronating
he couldn't have been pronating
we couldn't have been pronating
you couldn't have been pronating
they couldn't have been pronating	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I pronate?
could you pronate?
could he pronate?
could we pronate?
could you pronate?
could they pronate? 	could I be pronating?
could you be pronating?
could he be pronating?
could we be pronating?
could you be pronating?
could they be pronating? 	could I have pronated?
could you have pronated?
could he have pronated?
could we have pronated?
could you have pronated?
could they have pronated? 	could I have been pronating?
could you have been pronating?
could he have been pronating?
could we have been pronating?
could you have been pronating?
could they have been pronating? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
couldn't I pronate?
couldn't you pronate?
couldn't he pronate?
couldn't we pronate?
couldn't you pronate?
couldn't they pronate? 	couldn't I be pronating?
couldn't you be pronating?
couldn't he be pronating?
couldn't we be pronating?
couldn't you be pronating?
couldn't they be pronating? 	couldn't I have pronated?
couldn't you have pronated?
couldn't he have pronated?
couldn't we have pronated?
couldn't you have pronated?
couldn't they have pronated? 	couldn't I have been pronating?
couldn't you have been pronating?
couldn't he have been pronating?
couldn't we have been pronating?
couldn't you have been pronating?
couldn't they have been pronating?