English verb conjugation
COULD PHASE

Regular verb: phase - phased - phased

Affirmation

Simple form	V-ing form
I could phase you could phase he could phase we could phase you could phase they could phase	I could be phasing you could be phasing he could be phasing we could be phasing you could be phasing they could be phasing
Perfect	V-ing perfect
I could have phased you could have phased he could have phased we could have phased you could have phased they could have phased	I could have been phasing you could have been phasing he could have been phasing we could have been phasing you could have been phasing they could have been phasing

Negation

Simple form	V-ing form
I could not phase you could not phase he could not phase we could not phase you could not phase they could not phase	I could not be phasing you could not be phasing he could not be phasing we could not be phasing you could not be phasing they could not be phasing
Perfect	V-ing perfect
I could not have phased you could not have phased he could not have phased we could not have phased you could not have phased they could not have phased	I could not have been phasing you could not have been phasing he could not have been phasing we could not have been phasing you could not have been phasing they could not have been phasing

Interrogative form

Simple form	V-ing form
could I phase? could you phase? could he phase? could we phase? could you phase? could they phase?	could I be phasing? could you be phasing? could he be phasing? could we be phasing? could you be phasing? could they be phasing?
Perfect	V-ing perfect
could I have phased? could you have phased? could he have phased? could we have phased? could you have phased? could they have phased?	could I have been phasing? could you have been phasing? could he have been phasing? could we have been phasing? could you have been phasing? could they have been phasing?

Interro-negative form

Simple form	V-ing form
could I not phase? could you not phase? could he not phase? could we not phase? could you not phase? could they not phase?	could I not be phasing? could you not be phasing? could he not be phasing? could we not be phasing? could you not be phasing? could they not be phasing?
Perfect	V-ing perfect
could I not have phased? could you not have phased? could he not have phased? could we not have phased? could you not have phased? could they not have phased?	could I not have been phasing? could you not have been phasing? could he not have been phasing? could we not have been phasing? could you not have been phasing? could they not have been phasing?