English verb conjugation
COULD DEMODULATE

Regular verb: demodulate - demodulated - demodulated

Affirmation

Simple form	V-ing form
I could demodulate you could demodulate she could demodulate we could demodulate you could demodulate they could demodulate	I could be demodulating you could be demodulating she could be demodulating we could be demodulating you could be demodulating they could be demodulating
Perfect	V-ing perfect
I could have demodulated you could have demodulated she could have demodulated we could have demodulated you could have demodulated they could have demodulated	I could have been demodulating you could have been demodulating she could have been demodulating we could have been demodulating you could have been demodulating they could have been demodulating

Negation

Simple form	V-ing form
I could not demodulate you could not demodulate she could not demodulate we could not demodulate you could not demodulate they could not demodulate	I could not be demodulating you could not be demodulating she could not be demodulating we could not be demodulating you could not be demodulating they could not be demodulating
Perfect	V-ing perfect
I could not have demodulated you could not have demodulated she could not have demodulated we could not have demodulated you could not have demodulated they could not have demodulated	I could not have been demodulating you could not have been demodulating she could not have been demodulating we could not have been demodulating you could not have been demodulating they could not have been demodulating

Interrogative form

Simple form	V-ing form
could I demodulate? could you demodulate? could she demodulate? could we demodulate? could you demodulate? could they demodulate?	could I be demodulating? could you be demodulating? could she be demodulating? could we be demodulating? could you be demodulating? could they be demodulating?
Perfect	V-ing perfect
could I have demodulated? could you have demodulated? could she have demodulated? could we have demodulated? could you have demodulated? could they have demodulated?	could I have been demodulating? could you have been demodulating? could she have been demodulating? could we have been demodulating? could you have been demodulating? could they have been demodulating?

Interro-negative form

Simple form	V-ing form
could I not demodulate? could you not demodulate? could she not demodulate? could we not demodulate? could you not demodulate? could they not demodulate?	could I not be demodulating? could you not be demodulating? could she not be demodulating? could we not be demodulating? could you not be demodulating? could they not be demodulating?
Perfect	V-ing perfect
could I not have demodulated? could you not have demodulated? could she not have demodulated? could we not have demodulated? could you not have demodulated? could they not have demodulated?	could I not have been demodulating? could you not have been demodulating? could she not have been demodulating? could we not have been demodulating? could you not have been demodulating? could they not have been demodulating?