could ship
Regular verb: ship - shipped- shipped

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could ship
you could ship
she could ship
we could ship
you could ship
they could ship 	I could be shipping
you could be shipping
she could be shipping
we could be shipping
you could be shipping
they could be shipping	I could have shipped
you could have shipped
she could have shipped
we could have shipped
you could have shipped
they could have shipped	I could have been shipping
you could have been shipping
she could have been shipping
we could have been shipping
you could have been shipping
they could have been shipping	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could not ship
you could not ship
she could not ship
we could not ship
you could not ship
they could not ship 	I could not be shipping
you could not be shipping
she could not be shipping
we could not be shipping
you could not be shipping
they could not be shipping	I could not have shipped
you could not have shipped
she could not have shipped
we could not have shipped
you could not have shipped
they could not have shipped	I could not have been shipping
you could not have been shipping
she could not have been shipping
we could not have been shipping
you could not have been shipping
they could not have been shipping	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I ship?
could you ship?
could she ship?
could we ship?
could you ship?
could they ship? 	could I be shipping?
could you be shipping?
could she be shipping?
could we be shipping?
could you be shipping?
could they be shipping? 	could I have shipped?
could you have shipped?
could she have shipped?
could we have shipped?
could you have shipped?
could they have shipped? 	could I have been shipping?
could you have been shipping?
could she have been shipping?
could we have been shipping?
could you have been shipping?
could they have been shipping? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I not ship?
could you not ship?
could she not ship?
could we not ship?
could you not ship?
could they not ship? 	could I not be shipping?
could you not be shipping?
could she not be shipping?
could we not be shipping?
could you not be shipping?
could they not be shipping? 	could I not have shipped?
could you not have shipped?
could she not have shipped?
could we not have shipped?
could you not have shipped?
could they not have shipped? 	could I not have been shipping?
could you not have been shipping?
could she not have been shipping?
could we not have been shipping?
could you not have been shipping?
could they not have been shipping?