English verb conjugation
COULD VITALISE

Regular verb: vitalise - vitalised - vitalised

Affirmation

Simple form	V-ing form
I could vitalise you could vitalise he could vitalise we could vitalise you could vitalise they could vitalise	I could be vitalising you could be vitalising he could be vitalising we could be vitalising you could be vitalising they could be vitalising
Perfect	V-ing perfect
I could have vitalised you could have vitalised he could have vitalised we could have vitalised you could have vitalised they could have vitalised	I could have been vitalising you could have been vitalising he could have been vitalising we could have been vitalising you could have been vitalising they could have been vitalising

Negation

Simple form	V-ing form
I couldn't vitalise you couldn't vitalise he couldn't vitalise we couldn't vitalise you couldn't vitalise they couldn't vitalise	I couldn't be vitalising you couldn't be vitalising he couldn't be vitalising we couldn't be vitalising you couldn't be vitalising they couldn't be vitalising
Perfect	V-ing perfect
I couldn't have vitalised you couldn't have vitalised he couldn't have vitalised we couldn't have vitalised you couldn't have vitalised they couldn't have vitalised	I couldn't have been vitalising you couldn't have been vitalising he couldn't have been vitalising we couldn't have been vitalising you couldn't have been vitalising they couldn't have been vitalising

Interrogative form

Simple form	V-ing form
could I vitalise? could you vitalise? could he vitalise? could we vitalise? could you vitalise? could they vitalise?	could I be vitalising? could you be vitalising? could he be vitalising? could we be vitalising? could you be vitalising? could they be vitalising?
Perfect	V-ing perfect
could I have vitalised? could you have vitalised? could he have vitalised? could we have vitalised? could you have vitalised? could they have vitalised?	could I have been vitalising? could you have been vitalising? could he have been vitalising? could we have been vitalising? could you have been vitalising? could they have been vitalising?

Interro-negative form

Simple form	V-ing form
couldn't I vitalise? couldn't you vitalise? couldn't he vitalise? couldn't we vitalise? couldn't you vitalise? couldn't they vitalise?	couldn't I be vitalising? couldn't you be vitalising? couldn't he be vitalising? couldn't we be vitalising? couldn't you be vitalising? couldn't they be vitalising?
Perfect	V-ing perfect
couldn't I have vitalised? couldn't you have vitalised? couldn't he have vitalised? couldn't we have vitalised? couldn't you have vitalised? couldn't they have vitalised?	couldn't I have been vitalising? couldn't you have been vitalising? couldn't he have been vitalising? couldn't we have been vitalising? couldn't you have been vitalising? couldn't they have been vitalising?