could lob
Regular verb: lob - lobed- lobed

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could lob
you could lob
she could lob
we could lob
you could lob
they could lob 	I could be lobing
you could be lobing
she could be lobing
we could be lobing
you could be lobing
they could be lobing	I could have lobed
you could have lobed
she could have lobed
we could have lobed
you could have lobed
they could have lobed	I could have been lobing
you could have been lobing
she could have been lobing
we could have been lobing
you could have been lobing
they could have been lobing	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I couldn't lob
you couldn't lob
she couldn't lob
we couldn't lob
you couldn't lob
they couldn't lob 	I couldn't be lobing
you couldn't be lobing
she couldn't be lobing
we couldn't be lobing
you couldn't be lobing
they couldn't be lobing	I couldn't have lobed
you couldn't have lobed
she couldn't have lobed
we couldn't have lobed
you couldn't have lobed
they couldn't have lobed	I couldn't have been lobing
you couldn't have been lobing
she couldn't have been lobing
we couldn't have been lobing
you couldn't have been lobing
they couldn't have been lobing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I lob?
could you lob?
could she lob?
could we lob?
could you lob?
could they lob? 	could I be lobing?
could you be lobing?
could she be lobing?
could we be lobing?
could you be lobing?
could they be lobing? 	could I have lobed?
could you have lobed?
could she have lobed?
could we have lobed?
could you have lobed?
could they have lobed? 	could I have been lobing?
could you have been lobing?
could she have been lobing?
could we have been lobing?
could you have been lobing?
could they have been lobing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
couldn't I lob?
couldn't you lob?
couldn't she lob?
couldn't we lob?
couldn't you lob?
couldn't they lob? 	couldn't I be lobing?
couldn't you be lobing?
couldn't she be lobing?
couldn't we be lobing?
couldn't you be lobing?
couldn't they be lobing? 	couldn't I have lobed?
couldn't you have lobed?
couldn't she have lobed?
couldn't we have lobed?
couldn't you have lobed?
couldn't they have lobed? 	couldn't I have been lobing?
couldn't you have been lobing?
couldn't she have been lobing?
couldn't we have been lobing?
couldn't you have been lobing?
couldn't they have been lobing?