could interbreed
Irregular verb: interbreed - interbred- interbred

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could interbreed
you could interbreed
she could interbreed
we could interbreed
you could interbreed
they could interbreed 	I could be interbreeding
you could be interbreeding
she could be interbreeding
we could be interbreeding
you could be interbreeding
they could be interbreeding	I could have interbred
you could have interbred
she could have interbred
we could have interbred
you could have interbred
they could have interbred	I could have been interbreeding
you could have been interbreeding
she could have been interbreeding
we could have been interbreeding
you could have been interbreeding
they could have been interbreeding	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I couldn't interbreed
you couldn't interbreed
she couldn't interbreed
we couldn't interbreed
you couldn't interbreed
they couldn't interbreed 	I couldn't be interbreeding
you couldn't be interbreeding
she couldn't be interbreeding
we couldn't be interbreeding
you couldn't be interbreeding
they couldn't be interbreeding	I couldn't have interbred
you couldn't have interbred
she couldn't have interbred
we couldn't have interbred
you couldn't have interbred
they couldn't have interbred	I couldn't have been interbreeding
you couldn't have been interbreeding
she couldn't have been interbreeding
we couldn't have been interbreeding
you couldn't have been interbreeding
they couldn't have been interbreeding	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I interbreed?
could you interbreed?
could she interbreed?
could we interbreed?
could you interbreed?
could they interbreed? 	could I be interbreeding?
could you be interbreeding?
could she be interbreeding?
could we be interbreeding?
could you be interbreeding?
could they be interbreeding? 	could I have interbred?
could you have interbred?
could she have interbred?
could we have interbred?
could you have interbred?
could they have interbred? 	could I have been interbreeding?
could you have been interbreeding?
could she have been interbreeding?
could we have been interbreeding?
could you have been interbreeding?
could they have been interbreeding? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
couldn't I interbreed?
couldn't you interbreed?
couldn't she interbreed?
couldn't we interbreed?
couldn't you interbreed?
couldn't they interbreed? 	couldn't I be interbreeding?
couldn't you be interbreeding?
couldn't she be interbreeding?
couldn't we be interbreeding?
couldn't you be interbreeding?
couldn't they be interbreeding? 	couldn't I have interbred?
couldn't you have interbred?
couldn't she have interbred?
couldn't we have interbred?
couldn't you have interbred?
couldn't they have interbred? 	couldn't I have been interbreeding?
couldn't you have been interbreeding?
couldn't she have been interbreeding?
couldn't we have been interbreeding?
couldn't you have been interbreeding?
couldn't they have been interbreeding?