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 couldn't vise you couldn't vise he couldn't vise we couldn't vise you couldn't vise they couldn't vise	I couldn't be vising you couldn't be vising he couldn't be vising we couldn't be vising you couldn't be vising they couldn't be vising
Perfect	V-ing perfect
I couldn't have vised you couldn't have vised he couldn't have vised we couldn't have vised you couldn't have vised they couldn't have vised	I couldn't have been vising you couldn't have been vising he couldn't have been vising we couldn't have been vising you couldn't have been vising they couldn't 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
couldn't I vise? couldn't you vise? couldn't he vise? couldn't we vise? couldn't you vise? couldn't they vise?	couldn't I be vising? couldn't you be vising? couldn't he be vising? couldn't we be vising? couldn't you be vising? couldn't they be vising?
Perfect	V-ing perfect
couldn't I have vised? couldn't you have vised? couldn't he have vised? couldn't we have vised? couldn't you have vised? couldn't they have vised?	couldn't I have been vising? couldn't you have been vising? couldn't he have been vising? couldn't we have been vising? couldn't you have been vising? couldn't they have been vising?