English verb conjugation
COULD LOB

Regular verb: lob - lobed - lobed

Affirmation

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