could commingle
Regular verb: commingle - commingled- commingled

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could commingle
you could commingle
he could commingle
we could commingle
you could commingle
they could commingle 	I could be commingling
you could be commingling
he could be commingling
we could be commingling
you could be commingling
they could be commingling	I could have commingled
you could have commingled
he could have commingled
we could have commingled
you could have commingled
they could have commingled	I could have been commingling
you could have been commingling
he could have been commingling
we could have been commingling
you could have been commingling
they could have been commingling	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I couldn't commingle
you couldn't commingle
he couldn't commingle
we couldn't commingle
you couldn't commingle
they couldn't commingle 	I couldn't be commingling
you couldn't be commingling
he couldn't be commingling
we couldn't be commingling
you couldn't be commingling
they couldn't be commingling	I couldn't have commingled
you couldn't have commingled
he couldn't have commingled
we couldn't have commingled
you couldn't have commingled
they couldn't have commingled	I couldn't have been commingling
you couldn't have been commingling
he couldn't have been commingling
we couldn't have been commingling
you couldn't have been commingling
they couldn't have been commingling	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I commingle?
could you commingle?
could he commingle?
could we commingle?
could you commingle?
could they commingle? 	could I be commingling?
could you be commingling?
could he be commingling?
could we be commingling?
could you be commingling?
could they be commingling? 	could I have commingled?
could you have commingled?
could he have commingled?
could we have commingled?
could you have commingled?
could they have commingled? 	could I have been commingling?
could you have been commingling?
could he have been commingling?
could we have been commingling?
could you have been commingling?
could they have been commingling? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
couldn't I commingle?
couldn't you commingle?
couldn't he commingle?
couldn't we commingle?
couldn't you commingle?
couldn't they commingle? 	couldn't I be commingling?
couldn't you be commingling?
couldn't he be commingling?
couldn't we be commingling?
couldn't you be commingling?
couldn't they be commingling? 	couldn't I have commingled?
couldn't you have commingled?
couldn't he have commingled?
couldn't we have commingled?
couldn't you have commingled?
couldn't they have commingled? 	couldn't I have been commingling?
couldn't you have been commingling?
couldn't he have been commingling?
couldn't we have been commingling?
couldn't you have been commingling?
couldn't they have been commingling?