could bit
Regular verb: bit - bited- bited

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could bit
you could bit
he could bit
we could bit
you could bit
they could bit 	I could be biting
you could be biting
he could be biting
we could be biting
you could be biting
they could be biting	I could have bited
you could have bited
he could have bited
we could have bited
you could have bited
they could have bited	I could have been biting
you could have been biting
he could have been biting
we could have been biting
you could have been biting
they could have been biting	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I couldn't bit
you couldn't bit
he couldn't bit
we couldn't bit
you couldn't bit
they couldn't bit 	I couldn't be biting
you couldn't be biting
he couldn't be biting
we couldn't be biting
you couldn't be biting
they couldn't be biting	I couldn't have bited
you couldn't have bited
he couldn't have bited
we couldn't have bited
you couldn't have bited
they couldn't have bited	I couldn't have been biting
you couldn't have been biting
he couldn't have been biting
we couldn't have been biting
you couldn't have been biting
they couldn't have been biting	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I bit?
could you bit?
could he bit?
could we bit?
could you bit?
could they bit? 	could I be biting?
could you be biting?
could he be biting?
could we be biting?
could you be biting?
could they be biting? 	could I have bited?
could you have bited?
could he have bited?
could we have bited?
could you have bited?
could they have bited? 	could I have been biting?
could you have been biting?
could he have been biting?
could we have been biting?
could you have been biting?
could they have been biting? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
couldn't I bit?
couldn't you bit?
couldn't he bit?
couldn't we bit?
couldn't you bit?
couldn't they bit? 	couldn't I be biting?
couldn't you be biting?
couldn't he be biting?
couldn't we be biting?
couldn't you be biting?
couldn't they be biting? 	couldn't I have bited?
couldn't you have bited?
couldn't he have bited?
couldn't we have bited?
couldn't you have bited?
couldn't they have bited? 	couldn't I have been biting?
couldn't you have been biting?
couldn't he have been biting?
couldn't we have been biting?
couldn't you have been biting?
couldn't they have been biting?