could sunder
Regular verb: sunder - sundered- sundered

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could sunder
you could sunder
he could sunder
we could sunder
you could sunder
they could sunder 	I could be sundering
you could be sundering
he could be sundering
we could be sundering
you could be sundering
they could be sundering	I could have sundered
you could have sundered
he could have sundered
we could have sundered
you could have sundered
they could have sundered	I could have been sundering
you could have been sundering
he could have been sundering
we could have been sundering
you could have been sundering
they could have been sundering	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I couldn't sunder
you couldn't sunder
he couldn't sunder
we couldn't sunder
you couldn't sunder
they couldn't sunder 	I couldn't be sundering
you couldn't be sundering
he couldn't be sundering
we couldn't be sundering
you couldn't be sundering
they couldn't be sundering	I couldn't have sundered
you couldn't have sundered
he couldn't have sundered
we couldn't have sundered
you couldn't have sundered
they couldn't have sundered	I couldn't have been sundering
you couldn't have been sundering
he couldn't have been sundering
we couldn't have been sundering
you couldn't have been sundering
they couldn't have been sundering	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I sunder?
could you sunder?
could he sunder?
could we sunder?
could you sunder?
could they sunder? 	could I be sundering?
could you be sundering?
could he be sundering?
could we be sundering?
could you be sundering?
could they be sundering? 	could I have sundered?
could you have sundered?
could he have sundered?
could we have sundered?
could you have sundered?
could they have sundered? 	could I have been sundering?
could you have been sundering?
could he have been sundering?
could we have been sundering?
could you have been sundering?
could they have been sundering? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
couldn't I sunder?
couldn't you sunder?
couldn't he sunder?
couldn't we sunder?
couldn't you sunder?
couldn't they sunder? 	couldn't I be sundering?
couldn't you be sundering?
couldn't he be sundering?
couldn't we be sundering?
couldn't you be sundering?
couldn't they be sundering? 	couldn't I have sundered?
couldn't you have sundered?
couldn't he have sundered?
couldn't we have sundered?
couldn't you have sundered?
couldn't they have sundered? 	couldn't I have been sundering?
couldn't you have been sundering?
couldn't he have been sundering?
couldn't we have been sundering?
couldn't you have been sundering?
couldn't they have been sundering?