English verb conjugation
COULD REFORMULATE

Regular verb: reformulate - reformulated - reformulated

Affirmation

Simple form	V-ing form
I could reformulate you could reformulate she could reformulate we could reformulate you could reformulate they could reformulate	I could be reformulating you could be reformulating she could be reformulating we could be reformulating you could be reformulating they could be reformulating
Perfect	V-ing perfect
I could have reformulated you could have reformulated she could have reformulated we could have reformulated you could have reformulated they could have reformulated	I could have been reformulating you could have been reformulating she could have been reformulating we could have been reformulating you could have been reformulating they could have been reformulating

Negation

Simple form	V-ing form
I could not reformulate you could not reformulate she could not reformulate we could not reformulate you could not reformulate they could not reformulate	I could not be reformulating you could not be reformulating she could not be reformulating we could not be reformulating you could not be reformulating they could not be reformulating
Perfect	V-ing perfect
I could not have reformulated you could not have reformulated she could not have reformulated we could not have reformulated you could not have reformulated they could not have reformulated	I could not have been reformulating you could not have been reformulating she could not have been reformulating we could not have been reformulating you could not have been reformulating they could not have been reformulating

Interrogative form

Simple form	V-ing form
could I reformulate? could you reformulate? could she reformulate? could we reformulate? could you reformulate? could they reformulate?	could I be reformulating? could you be reformulating? could she be reformulating? could we be reformulating? could you be reformulating? could they be reformulating?
Perfect	V-ing perfect
could I have reformulated? could you have reformulated? could she have reformulated? could we have reformulated? could you have reformulated? could they have reformulated?	could I have been reformulating? could you have been reformulating? could she have been reformulating? could we have been reformulating? could you have been reformulating? could they have been reformulating?

Interro-negative form

Simple form	V-ing form
could I not reformulate? could you not reformulate? could she not reformulate? could we not reformulate? could you not reformulate? could they not reformulate?	could I not be reformulating? could you not be reformulating? could she not be reformulating? could we not be reformulating? could you not be reformulating? could they not be reformulating?
Perfect	V-ing perfect
could I not have reformulated? could you not have reformulated? could she not have reformulated? could we not have reformulated? could you not have reformulated? could they not have reformulated?	could I not have been reformulating? could you not have been reformulating? could she not have been reformulating? could we not have been reformulating? could you not have been reformulating? could they not have been reformulating?