English verb conjugation
COULD VAPORISE

Regular verb: vaporise - vaporised - vaporised

Affirmation

Simple form	V-ing form
I could vaporise you could vaporise he could vaporise we could vaporise you could vaporise they could vaporise	I could be vaporising you could be vaporising he could be vaporising we could be vaporising you could be vaporising they could be vaporising
Perfect	V-ing perfect
I could have vaporised you could have vaporised he could have vaporised we could have vaporised you could have vaporised they could have vaporised	I could have been vaporising you could have been vaporising he could have been vaporising we could have been vaporising you could have been vaporising they could have been vaporising

Negation

Simple form	V-ing form
I couldn't vaporise you couldn't vaporise he couldn't vaporise we couldn't vaporise you couldn't vaporise they couldn't vaporise	I couldn't be vaporising you couldn't be vaporising he couldn't be vaporising we couldn't be vaporising you couldn't be vaporising they couldn't be vaporising
Perfect	V-ing perfect
I couldn't have vaporised you couldn't have vaporised he couldn't have vaporised we couldn't have vaporised you couldn't have vaporised they couldn't have vaporised	I couldn't have been vaporising you couldn't have been vaporising he couldn't have been vaporising we couldn't have been vaporising you couldn't have been vaporising they couldn't have been vaporising

Interrogative form

Simple form	V-ing form
could I vaporise? could you vaporise? could he vaporise? could we vaporise? could you vaporise? could they vaporise?	could I be vaporising? could you be vaporising? could he be vaporising? could we be vaporising? could you be vaporising? could they be vaporising?
Perfect	V-ing perfect
could I have vaporised? could you have vaporised? could he have vaporised? could we have vaporised? could you have vaporised? could they have vaporised?	could I have been vaporising? could you have been vaporising? could he have been vaporising? could we have been vaporising? could you have been vaporising? could they have been vaporising?

Interro-negative form

Simple form	V-ing form
couldn't I vaporise? couldn't you vaporise? couldn't he vaporise? couldn't we vaporise? couldn't you vaporise? couldn't they vaporise?	couldn't I be vaporising? couldn't you be vaporising? couldn't he be vaporising? couldn't we be vaporising? couldn't you be vaporising? couldn't they be vaporising?
Perfect	V-ing perfect
couldn't I have vaporised? couldn't you have vaporised? couldn't he have vaporised? couldn't we have vaporised? couldn't you have vaporised? couldn't they have vaporised?	couldn't I have been vaporising? couldn't you have been vaporising? couldn't he have been vaporising? couldn't we have been vaporising? couldn't you have been vaporising? couldn't they have been vaporising?