English verb conjugation
COULD CONSERVE

Regular verb: conserve - conserved - conserved

Affirmation

Simple form	V-ing form
I could conserve you could conserve he could conserve we could conserve you could conserve they could conserve	I could be conserving you could be conserving he could be conserving we could be conserving you could be conserving they could be conserving
Perfect	V-ing perfect
I could have conserved you could have conserved he could have conserved we could have conserved you could have conserved they could have conserved	I could have been conserving you could have been conserving he could have been conserving we could have been conserving you could have been conserving they could have been conserving

Negation

Simple form	V-ing form
I could not conserve you could not conserve he could not conserve we could not conserve you could not conserve they could not conserve	I could not be conserving you could not be conserving he could not be conserving we could not be conserving you could not be conserving they could not be conserving
Perfect	V-ing perfect
I could not have conserved you could not have conserved he could not have conserved we could not have conserved you could not have conserved they could not have conserved	I could not have been conserving you could not have been conserving he could not have been conserving we could not have been conserving you could not have been conserving they could not have been conserving

Interrogative form

Simple form	V-ing form
could I conserve? could you conserve? could he conserve? could we conserve? could you conserve? could they conserve?	could I be conserving? could you be conserving? could he be conserving? could we be conserving? could you be conserving? could they be conserving?
Perfect	V-ing perfect
could I have conserved? could you have conserved? could he have conserved? could we have conserved? could you have conserved? could they have conserved?	could I have been conserving? could you have been conserving? could he have been conserving? could we have been conserving? could you have been conserving? could they have been conserving?

Interro-negative form

Simple form	V-ing form
could I not conserve? could you not conserve? could he not conserve? could we not conserve? could you not conserve? could they not conserve?	could I not be conserving? could you not be conserving? could he not be conserving? could we not be conserving? could you not be conserving? could they not be conserving?
Perfect	V-ing perfect
could I not have conserved? could you not have conserved? could he not have conserved? could we not have conserved? could you not have conserved? could they not have conserved?	could I not have been conserving? could you not have been conserving? could he not have been conserving? could we not have been conserving? could you not have been conserving? could they not have been conserving?