English verb conjugation
COULD HALVE

Regular verb: halve - halved - halved

Affirmation

Simple form	V-ing form
I could halve you could halve she could halve we could halve you could halve they could halve	I could be halving you could be halving she could be halving we could be halving you could be halving they could be halving
Perfect	V-ing perfect
I could have halved you could have halved she could have halved we could have halved you could have halved they could have halved	I could have been halving you could have been halving she could have been halving we could have been halving you could have been halving they could have been halving

Negation

Simple form	V-ing form
I couldn't halve you couldn't halve she couldn't halve we couldn't halve you couldn't halve they couldn't halve	I couldn't be halving you couldn't be halving she couldn't be halving we couldn't be halving you couldn't be halving they couldn't be halving
Perfect	V-ing perfect
I couldn't have halved you couldn't have halved she couldn't have halved we couldn't have halved you couldn't have halved they couldn't have halved	I couldn't have been halving you couldn't have been halving she couldn't have been halving we couldn't have been halving you couldn't have been halving they couldn't have been halving

Interrogative form

Simple form	V-ing form
could I halve? could you halve? could she halve? could we halve? could you halve? could they halve?	could I be halving? could you be halving? could she be halving? could we be halving? could you be halving? could they be halving?
Perfect	V-ing perfect
could I have halved? could you have halved? could she have halved? could we have halved? could you have halved? could they have halved?	could I have been halving? could you have been halving? could she have been halving? could we have been halving? could you have been halving? could they have been halving?

Interro-negative form

Simple form	V-ing form
couldn't I halve? couldn't you halve? couldn't she halve? couldn't we halve? couldn't you halve? couldn't they halve?	couldn't I be halving? couldn't you be halving? couldn't she be halving? couldn't we be halving? couldn't you be halving? couldn't they be halving?
Perfect	V-ing perfect
couldn't I have halved? couldn't you have halved? couldn't she have halved? couldn't we have halved? couldn't you have halved? couldn't they have halved?	couldn't I have been halving? couldn't you have been halving? couldn't she have been halving? couldn't we have been halving? couldn't you have been halving? couldn't they have been halving?