could distemper
Regular verb: distemper - distempered- distempered

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could distemper
you could distemper
he could distemper
we could distemper
you could distemper
they could distemper 	I could be distempering
you could be distempering
he could be distempering
we could be distempering
you could be distempering
they could be distempering	I could have distempered
you could have distempered
he could have distempered
we could have distempered
you could have distempered
they could have distempered	I could have been distempering
you could have been distempering
he could have been distempering
we could have been distempering
you could have been distempering
they could have been distempering	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I couldn't distemper
you couldn't distemper
he couldn't distemper
we couldn't distemper
you couldn't distemper
they couldn't distemper 	I couldn't be distempering
you couldn't be distempering
he couldn't be distempering
we couldn't be distempering
you couldn't be distempering
they couldn't be distempering	I couldn't have distempered
you couldn't have distempered
he couldn't have distempered
we couldn't have distempered
you couldn't have distempered
they couldn't have distempered	I couldn't have been distempering
you couldn't have been distempering
he couldn't have been distempering
we couldn't have been distempering
you couldn't have been distempering
they couldn't have been distempering	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I distemper?
could you distemper?
could he distemper?
could we distemper?
could you distemper?
could they distemper? 	could I be distempering?
could you be distempering?
could he be distempering?
could we be distempering?
could you be distempering?
could they be distempering? 	could I have distempered?
could you have distempered?
could he have distempered?
could we have distempered?
could you have distempered?
could they have distempered? 	could I have been distempering?
could you have been distempering?
could he have been distempering?
could we have been distempering?
could you have been distempering?
could they have been distempering? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
couldn't I distemper?
couldn't you distemper?
couldn't he distemper?
couldn't we distemper?
couldn't you distemper?
couldn't they distemper? 	couldn't I be distempering?
couldn't you be distempering?
couldn't he be distempering?
couldn't we be distempering?
couldn't you be distempering?
couldn't they be distempering? 	couldn't I have distempered?
couldn't you have distempered?
couldn't he have distempered?
couldn't we have distempered?
couldn't you have distempered?
couldn't they have distempered? 	couldn't I have been distempering?
couldn't you have been distempering?
couldn't he have been distempering?
couldn't we have been distempering?
couldn't you have been distempering?
couldn't they have been distempering?