English verb conjugation
COULD CARVE

Regular verb: carve - carved - carved

Affirmation

Simple form	V-ing form
I could carve you could carve he could carve we could carve you could carve they could carve	I could be carving you could be carving he could be carving we could be carving you could be carving they could be carving
Perfect	V-ing perfect
I could have carved you could have carved he could have carved we could have carved you could have carved they could have carved	I could have been carving you could have been carving he could have been carving we could have been carving you could have been carving they could have been carving

Negation

Simple form	V-ing form
I couldn't carve you couldn't carve he couldn't carve we couldn't carve you couldn't carve they couldn't carve	I couldn't be carving you couldn't be carving he couldn't be carving we couldn't be carving you couldn't be carving they couldn't be carving
Perfect	V-ing perfect
I couldn't have carved you couldn't have carved he couldn't have carved we couldn't have carved you couldn't have carved they couldn't have carved	I couldn't have been carving you couldn't have been carving he couldn't have been carving we couldn't have been carving you couldn't have been carving they couldn't have been carving

Interrogative form

Simple form	V-ing form
could I carve? could you carve? could he carve? could we carve? could you carve? could they carve?	could I be carving? could you be carving? could he be carving? could we be carving? could you be carving? could they be carving?
Perfect	V-ing perfect
could I have carved? could you have carved? could he have carved? could we have carved? could you have carved? could they have carved?	could I have been carving? could you have been carving? could he have been carving? could we have been carving? could you have been carving? could they have been carving?

Interro-negative form

Simple form	V-ing form
couldn't I carve? couldn't you carve? couldn't he carve? couldn't we carve? couldn't you carve? couldn't they carve?	couldn't I be carving? couldn't you be carving? couldn't he be carving? couldn't we be carving? couldn't you be carving? couldn't they be carving?
Perfect	V-ing perfect
couldn't I have carved? couldn't you have carved? couldn't he have carved? couldn't we have carved? couldn't you have carved? couldn't they have carved?	couldn't I have been carving? couldn't you have been carving? couldn't he have been carving? couldn't we have been carving? couldn't you have been carving? couldn't they have been carving?