could pearl
Regular verb: pearl - pearled- pearled

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could pearl
you could pearl
he could pearl
we could pearl
you could pearl
they could pearl 	I could be pearling
you could be pearling
he could be pearling
we could be pearling
you could be pearling
they could be pearling	I could have pearled
you could have pearled
he could have pearled
we could have pearled
you could have pearled
they could have pearled	I could have been pearling
you could have been pearling
he could have been pearling
we could have been pearling
you could have been pearling
they could have been pearling	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I couldn't pearl
you couldn't pearl
he couldn't pearl
we couldn't pearl
you couldn't pearl
they couldn't pearl 	I couldn't be pearling
you couldn't be pearling
he couldn't be pearling
we couldn't be pearling
you couldn't be pearling
they couldn't be pearling	I couldn't have pearled
you couldn't have pearled
he couldn't have pearled
we couldn't have pearled
you couldn't have pearled
they couldn't have pearled	I couldn't have been pearling
you couldn't have been pearling
he couldn't have been pearling
we couldn't have been pearling
you couldn't have been pearling
they couldn't have been pearling	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I pearl?
could you pearl?
could he pearl?
could we pearl?
could you pearl?
could they pearl? 	could I be pearling?
could you be pearling?
could he be pearling?
could we be pearling?
could you be pearling?
could they be pearling? 	could I have pearled?
could you have pearled?
could he have pearled?
could we have pearled?
could you have pearled?
could they have pearled? 	could I have been pearling?
could you have been pearling?
could he have been pearling?
could we have been pearling?
could you have been pearling?
could they have been pearling? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
couldn't I pearl?
couldn't you pearl?
couldn't he pearl?
couldn't we pearl?
couldn't you pearl?
couldn't they pearl? 	couldn't I be pearling?
couldn't you be pearling?
couldn't he be pearling?
couldn't we be pearling?
couldn't you be pearling?
couldn't they be pearling? 	couldn't I have pearled?
couldn't you have pearled?
couldn't he have pearled?
couldn't we have pearled?
couldn't you have pearled?
couldn't they have pearled? 	couldn't I have been pearling?
couldn't you have been pearling?
couldn't he have been pearling?
couldn't we have been pearling?
couldn't you have been pearling?
couldn't they have been pearling?