English verb conjugation
COULD VOCALISE

Regular verb: vocalise - vocalised - vocalised

Affirmation

Simple form	V-ing form
I could vocalise you could vocalise he could vocalise we could vocalise you could vocalise they could vocalise	I could be vocalising you could be vocalising he could be vocalising we could be vocalising you could be vocalising they could be vocalising
Perfect	V-ing perfect
I could have vocalised you could have vocalised he could have vocalised we could have vocalised you could have vocalised they could have vocalised	I could have been vocalising you could have been vocalising he could have been vocalising we could have been vocalising you could have been vocalising they could have been vocalising

Negation

Simple form	V-ing form
I couldn't vocalise you couldn't vocalise he couldn't vocalise we couldn't vocalise you couldn't vocalise they couldn't vocalise	I couldn't be vocalising you couldn't be vocalising he couldn't be vocalising we couldn't be vocalising you couldn't be vocalising they couldn't be vocalising
Perfect	V-ing perfect
I couldn't have vocalised you couldn't have vocalised he couldn't have vocalised we couldn't have vocalised you couldn't have vocalised they couldn't have vocalised	I couldn't have been vocalising you couldn't have been vocalising he couldn't have been vocalising we couldn't have been vocalising you couldn't have been vocalising they couldn't have been vocalising

Interrogative form

Simple form	V-ing form
could I vocalise? could you vocalise? could he vocalise? could we vocalise? could you vocalise? could they vocalise?	could I be vocalising? could you be vocalising? could he be vocalising? could we be vocalising? could you be vocalising? could they be vocalising?
Perfect	V-ing perfect
could I have vocalised? could you have vocalised? could he have vocalised? could we have vocalised? could you have vocalised? could they have vocalised?	could I have been vocalising? could you have been vocalising? could he have been vocalising? could we have been vocalising? could you have been vocalising? could they have been vocalising?

Interro-negative form

Simple form	V-ing form
couldn't I vocalise? couldn't you vocalise? couldn't he vocalise? couldn't we vocalise? couldn't you vocalise? couldn't they vocalise?	couldn't I be vocalising? couldn't you be vocalising? couldn't he be vocalising? couldn't we be vocalising? couldn't you be vocalising? couldn't they be vocalising?
Perfect	V-ing perfect
couldn't I have vocalised? couldn't you have vocalised? couldn't he have vocalised? couldn't we have vocalised? couldn't you have vocalised? couldn't they have vocalised?	couldn't I have been vocalising? couldn't you have been vocalising? couldn't he have been vocalising? couldn't we have been vocalising? couldn't you have been vocalising? couldn't they have been vocalising?