could interbed
Regular verb: interbed - interbeded- interbeded

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could interbed
you could interbed
she could interbed
we could interbed
you could interbed
they could interbed 	I could be interbeding
you could be interbeding
she could be interbeding
we could be interbeding
you could be interbeding
they could be interbeding	I could have interbeded
you could have interbeded
she could have interbeded
we could have interbeded
you could have interbeded
they could have interbeded	I could have been interbeding
you could have been interbeding
she could have been interbeding
we could have been interbeding
you could have been interbeding
they could have been interbeding	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I couldn't interbed
you couldn't interbed
she couldn't interbed
we couldn't interbed
you couldn't interbed
they couldn't interbed 	I couldn't be interbeding
you couldn't be interbeding
she couldn't be interbeding
we couldn't be interbeding
you couldn't be interbeding
they couldn't be interbeding	I couldn't have interbeded
you couldn't have interbeded
she couldn't have interbeded
we couldn't have interbeded
you couldn't have interbeded
they couldn't have interbeded	I couldn't have been interbeding
you couldn't have been interbeding
she couldn't have been interbeding
we couldn't have been interbeding
you couldn't have been interbeding
they couldn't have been interbeding	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I interbed?
could you interbed?
could she interbed?
could we interbed?
could you interbed?
could they interbed? 	could I be interbeding?
could you be interbeding?
could she be interbeding?
could we be interbeding?
could you be interbeding?
could they be interbeding? 	could I have interbeded?
could you have interbeded?
could she have interbeded?
could we have interbeded?
could you have interbeded?
could they have interbeded? 	could I have been interbeding?
could you have been interbeding?
could she have been interbeding?
could we have been interbeding?
could you have been interbeding?
could they have been interbeding? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
couldn't I interbed?
couldn't you interbed?
couldn't she interbed?
couldn't we interbed?
couldn't you interbed?
couldn't they interbed? 	couldn't I be interbeding?
couldn't you be interbeding?
couldn't she be interbeding?
couldn't we be interbeding?
couldn't you be interbeding?
couldn't they be interbeding? 	couldn't I have interbeded?
couldn't you have interbeded?
couldn't she have interbeded?
couldn't we have interbeded?
couldn't you have interbeded?
couldn't they have interbeded? 	couldn't I have been interbeding?
couldn't you have been interbeding?
couldn't she have been interbeding?
couldn't we have been interbeding?
couldn't you have been interbeding?
couldn't they have been interbeding?