English verb conjugation
CAN CAVE

Regular verb: cave - caved - caved

Affirmation

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

Negation

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

Interrogative form

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

Interro-negative form

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