English verb conjugation
COULD THIEVE

Regular verb: thieve - thieved - thieved

Affirmation

Simple form	V-ing form
I could thieve you could thieve she could thieve we could thieve you could thieve they could thieve	I could be thieving you could be thieving she could be thieving we could be thieving you could be thieving they could be thieving
Perfect	V-ing perfect
I could have thieved you could have thieved she could have thieved we could have thieved you could have thieved they could have thieved	I could have been thieving you could have been thieving she could have been thieving we could have been thieving you could have been thieving they could have been thieving

Negation

Simple form	V-ing form
I could not thieve you could not thieve she could not thieve we could not thieve you could not thieve they could not thieve	I could not be thieving you could not be thieving she could not be thieving we could not be thieving you could not be thieving they could not be thieving
Perfect	V-ing perfect
I could not have thieved you could not have thieved she could not have thieved we could not have thieved you could not have thieved they could not have thieved	I could not have been thieving you could not have been thieving she could not have been thieving we could not have been thieving you could not have been thieving they could not have been thieving

Interrogative form

Simple form	V-ing form
could I thieve? could you thieve? could she thieve? could we thieve? could you thieve? could they thieve?	could I be thieving? could you be thieving? could she be thieving? could we be thieving? could you be thieving? could they be thieving?
Perfect	V-ing perfect
could I have thieved? could you have thieved? could she have thieved? could we have thieved? could you have thieved? could they have thieved?	could I have been thieving? could you have been thieving? could she have been thieving? could we have been thieving? could you have been thieving? could they have been thieving?

Interro-negative form

Simple form	V-ing form
could I not thieve? could you not thieve? could she not thieve? could we not thieve? could you not thieve? could they not thieve?	could I not be thieving? could you not be thieving? could she not be thieving? could we not be thieving? could you not be thieving? could they not be thieving?
Perfect	V-ing perfect
could I not have thieved? could you not have thieved? could she not have thieved? could we not have thieved? could you not have thieved? could they not have thieved?	could I not have been thieving? could you not have been thieving? could she not have been thieving? could we not have been thieving? could you not have been thieving? could they not have been thieving?