English verb conjugation
COULD IONISE

Regular verb: ionise - ionised - ionised

Affirmation

Simple form	V-ing form
I could ionise you could ionise he could ionise we could ionise you could ionise they could ionise	I could be ionising you could be ionising he could be ionising we could be ionising you could be ionising they could be ionising
Perfect	V-ing perfect
I could have ionised you could have ionised he could have ionised we could have ionised you could have ionised they could have ionised	I could have been ionising you could have been ionising he could have been ionising we could have been ionising you could have been ionising they could have been ionising

Negation

Simple form	V-ing form
I couldn't ionise you couldn't ionise he couldn't ionise we couldn't ionise you couldn't ionise they couldn't ionise	I couldn't be ionising you couldn't be ionising he couldn't be ionising we couldn't be ionising you couldn't be ionising they couldn't be ionising
Perfect	V-ing perfect
I couldn't have ionised you couldn't have ionised he couldn't have ionised we couldn't have ionised you couldn't have ionised they couldn't have ionised	I couldn't have been ionising you couldn't have been ionising he couldn't have been ionising we couldn't have been ionising you couldn't have been ionising they couldn't have been ionising

Interrogative form

Simple form	V-ing form
could I ionise? could you ionise? could he ionise? could we ionise? could you ionise? could they ionise?	could I be ionising? could you be ionising? could he be ionising? could we be ionising? could you be ionising? could they be ionising?
Perfect	V-ing perfect
could I have ionised? could you have ionised? could he have ionised? could we have ionised? could you have ionised? could they have ionised?	could I have been ionising? could you have been ionising? could he have been ionising? could we have been ionising? could you have been ionising? could they have been ionising?

Interro-negative form

Simple form	V-ing form
couldn't I ionise? couldn't you ionise? couldn't he ionise? couldn't we ionise? couldn't you ionise? couldn't they ionise?	couldn't I be ionising? couldn't you be ionising? couldn't he be ionising? couldn't we be ionising? couldn't you be ionising? couldn't they be ionising?
Perfect	V-ing perfect
couldn't I have ionised? couldn't you have ionised? couldn't he have ionised? couldn't we have ionised? couldn't you have ionised? couldn't they have ionised?	couldn't I have been ionising? couldn't you have been ionising? couldn't he have been ionising? couldn't we have been ionising? couldn't you have been ionising? couldn't they have been ionising?