English verb conjugation
COULD PRESCRIBE

Regular verb: prescribe - prescribed - prescribed

Affirmation

Simple form	V-ing form
I could prescribe you could prescribe she could prescribe we could prescribe you could prescribe they could prescribe	I could be prescribing you could be prescribing she could be prescribing we could be prescribing you could be prescribing they could be prescribing
Perfect	V-ing perfect
I could have prescribed you could have prescribed she could have prescribed we could have prescribed you could have prescribed they could have prescribed	I could have been prescribing you could have been prescribing she could have been prescribing we could have been prescribing you could have been prescribing they could have been prescribing

Negation

Simple form	V-ing form
I couldn't prescribe you couldn't prescribe she couldn't prescribe we couldn't prescribe you couldn't prescribe they couldn't prescribe	I couldn't be prescribing you couldn't be prescribing she couldn't be prescribing we couldn't be prescribing you couldn't be prescribing they couldn't be prescribing
Perfect	V-ing perfect
I couldn't have prescribed you couldn't have prescribed she couldn't have prescribed we couldn't have prescribed you couldn't have prescribed they couldn't have prescribed	I couldn't have been prescribing you couldn't have been prescribing she couldn't have been prescribing we couldn't have been prescribing you couldn't have been prescribing they couldn't have been prescribing

Interrogative form

Simple form	V-ing form
could I prescribe? could you prescribe? could she prescribe? could we prescribe? could you prescribe? could they prescribe?	could I be prescribing? could you be prescribing? could she be prescribing? could we be prescribing? could you be prescribing? could they be prescribing?
Perfect	V-ing perfect
could I have prescribed? could you have prescribed? could she have prescribed? could we have prescribed? could you have prescribed? could they have prescribed?	could I have been prescribing? could you have been prescribing? could she have been prescribing? could we have been prescribing? could you have been prescribing? could they have been prescribing?

Interro-negative form

Simple form	V-ing form
couldn't I prescribe? couldn't you prescribe? couldn't she prescribe? couldn't we prescribe? couldn't you prescribe? couldn't they prescribe?	couldn't I be prescribing? couldn't you be prescribing? couldn't she be prescribing? couldn't we be prescribing? couldn't you be prescribing? couldn't they be prescribing?
Perfect	V-ing perfect
couldn't I have prescribed? couldn't you have prescribed? couldn't she have prescribed? couldn't we have prescribed? couldn't you have prescribed? couldn't they have prescribed?	couldn't I have been prescribing? couldn't you have been prescribing? couldn't she have been prescribing? couldn't we have been prescribing? couldn't you have been prescribing? couldn't they have been prescribing?