English verb conjugation
COULD CAVE

Regular verb: cave - caved - caved

Affirmation

Simple form	V-ing form
I could cave you could cave he could cave we could cave you could cave they could cave	I could be caving you could be caving he could be caving we could be caving you could be caving they could be caving
Perfect	V-ing perfect
I could have caved you could have caved he could have caved we could have caved you could have caved they could have caved	I could have been caving you could have been caving he could have been caving we could have been caving you could have been caving they could have been caving

Negation

Simple form	V-ing form
I couldn't cave you couldn't cave he couldn't cave we couldn't cave you couldn't cave they couldn't cave	I couldn't be caving you couldn't be caving he couldn't be caving we couldn't be caving you couldn't be caving they couldn't be caving
Perfect	V-ing perfect
I couldn't have caved you couldn't have caved he couldn't have caved we couldn't have caved you couldn't have caved they couldn't have caved	I couldn't have been caving you couldn't have been caving he couldn't have been caving we couldn't have been caving you couldn't have been caving they couldn't have been caving

Interrogative form

Simple form	V-ing form
could I cave? could you cave? could he cave? could we cave? could you cave? could they cave?	could I be caving? could you be caving? could he be caving? could we be caving? could you be caving? could they be caving?
Perfect	V-ing perfect
could I have caved? could you have caved? could he have caved? could we have caved? could you have caved? could they have caved?	could I have been caving? could you have been caving? could he have been caving? could we have been caving? could you have been caving? could they have been caving?

Interro-negative form

Simple form	V-ing form
couldn't I cave? couldn't you cave? couldn't he cave? couldn't we cave? couldn't you cave? couldn't they cave?	couldn't I be caving? couldn't you be caving? couldn't he be caving? couldn't we be caving? couldn't you be caving? couldn't they be caving?
Perfect	V-ing perfect
couldn't I have caved? couldn't you have caved? couldn't he have caved? couldn't we have caved? couldn't you have caved? couldn't they have caved?	couldn't I have been caving? couldn't you have been caving? couldn't he have been caving? couldn't we have been caving? couldn't you have been caving? couldn't they have been caving?