could mottle
Regular verb: mottle - mottled- mottled

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could mottle
you could mottle
she could mottle
we could mottle
you could mottle
they could mottle 	I could be mottling
you could be mottling
she could be mottling
we could be mottling
you could be mottling
they could be mottling	I could have mottled
you could have mottled
she could have mottled
we could have mottled
you could have mottled
they could have mottled	I could have been mottling
you could have been mottling
she could have been mottling
we could have been mottling
you could have been mottling
they could have been mottling	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could not mottle
you could not mottle
she could not mottle
we could not mottle
you could not mottle
they could not mottle 	I could not be mottling
you could not be mottling
she could not be mottling
we could not be mottling
you could not be mottling
they could not be mottling	I could not have mottled
you could not have mottled
she could not have mottled
we could not have mottled
you could not have mottled
they could not have mottled	I could not have been mottling
you could not have been mottling
she could not have been mottling
we could not have been mottling
you could not have been mottling
they could not have been mottling	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I mottle?
could you mottle?
could she mottle?
could we mottle?
could you mottle?
could they mottle? 	could I be mottling?
could you be mottling?
could she be mottling?
could we be mottling?
could you be mottling?
could they be mottling? 	could I have mottled?
could you have mottled?
could she have mottled?
could we have mottled?
could you have mottled?
could they have mottled? 	could I have been mottling?
could you have been mottling?
could she have been mottling?
could we have been mottling?
could you have been mottling?
could they have been mottling? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I not mottle?
could you not mottle?
could she not mottle?
could we not mottle?
could you not mottle?
could they not mottle? 	could I not be mottling?
could you not be mottling?
could she not be mottling?
could we not be mottling?
could you not be mottling?
could they not be mottling? 	could I not have mottled?
could you not have mottled?
could she not have mottled?
could we not have mottled?
could you not have mottled?
could they not have mottled? 	could I not have been mottling?
could you not have been mottling?
could she not have been mottling?
could we not have been mottling?
could you not have been mottling?
could they not have been mottling?