English verb conjugation
COULD VISE

Regular verb: vise - vised - vised

Affirmation

Simple form	V-ing form
I could vise you could vise he could vise we could vise you could vise they could vise	I could be vising you could be vising he could be vising we could be vising you could be vising they could be vising
Perfect	V-ing perfect
I could have vised you could have vised he could have vised we could have vised you could have vised they could have vised	I could have been vising you could have been vising he could have been vising we could have been vising you could have been vising they could have been vising

Negation

Simple form	V-ing form
I could not vise you could not vise he could not vise we could not vise you could not vise they could not vise	I could not be vising you could not be vising he could not be vising we could not be vising you could not be vising they could not be vising
Perfect	V-ing perfect
I could not have vised you could not have vised he could not have vised we could not have vised you could not have vised they could not have vised	I could not have been vising you could not have been vising he could not have been vising we could not have been vising you could not have been vising they could not have been vising

Interrogative form

Simple form	V-ing form
could I vise? could you vise? could he vise? could we vise? could you vise? could they vise?	could I be vising? could you be vising? could he be vising? could we be vising? could you be vising? could they be vising?
Perfect	V-ing perfect
could I have vised? could you have vised? could he have vised? could we have vised? could you have vised? could they have vised?	could I have been vising? could you have been vising? could he have been vising? could we have been vising? could you have been vising? could they have been vising?

Interro-negative form

Simple form	V-ing form
could I not vise? could you not vise? could he not vise? could we not vise? could you not vise? could they not vise?	could I not be vising? could you not be vising? could he not be vising? could we not be vising? could you not be vising? could they not be vising?
Perfect	V-ing perfect
could I not have vised? could you not have vised? could he not have vised? could we not have vised? could you not have vised? could they not have vised?	could I not have been vising? could you not have been vising? could he not have been vising? could we not have been vising? could you not have been vising? could they not have been vising?