could sop
Regular verb: sop - sopped- sopped

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could sop
you could sop
she could sop
we could sop
you could sop
they could sop 	I could be sopping
you could be sopping
she could be sopping
we could be sopping
you could be sopping
they could be sopping	I could have sopped
you could have sopped
she could have sopped
we could have sopped
you could have sopped
they could have sopped	I could have been sopping
you could have been sopping
she could have been sopping
we could have been sopping
you could have been sopping
they could have been sopping	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could not sop
you could not sop
she could not sop
we could not sop
you could not sop
they could not sop 	I could not be sopping
you could not be sopping
she could not be sopping
we could not be sopping
you could not be sopping
they could not be sopping	I could not have sopped
you could not have sopped
she could not have sopped
we could not have sopped
you could not have sopped
they could not have sopped	I could not have been sopping
you could not have been sopping
she could not have been sopping
we could not have been sopping
you could not have been sopping
they could not have been sopping	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I sop?
could you sop?
could she sop?
could we sop?
could you sop?
could they sop? 	could I be sopping?
could you be sopping?
could she be sopping?
could we be sopping?
could you be sopping?
could they be sopping? 	could I have sopped?
could you have sopped?
could she have sopped?
could we have sopped?
could you have sopped?
could they have sopped? 	could I have been sopping?
could you have been sopping?
could she have been sopping?
could we have been sopping?
could you have been sopping?
could they have been sopping? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I not sop?
could you not sop?
could she not sop?
could we not sop?
could you not sop?
could they not sop? 	could I not be sopping?
could you not be sopping?
could she not be sopping?
could we not be sopping?
could you not be sopping?
could they not be sopping? 	could I not have sopped?
could you not have sopped?
could she not have sopped?
could we not have sopped?
could you not have sopped?
could they not have sopped? 	could I not have been sopping?
could you not have been sopping?
could she not have been sopping?
could we not have been sopping?
could you not have been sopping?
could they not have been sopping?