English verb conjugation
COULD IODISE

Regular verb: iodise - iodised - iodised

Affirmation

Simple form	V-ing form
I could iodise you could iodise he could iodise we could iodise you could iodise they could iodise	I could be iodising you could be iodising he could be iodising we could be iodising you could be iodising they could be iodising
Perfect	V-ing perfect
I could have iodised you could have iodised he could have iodised we could have iodised you could have iodised they could have iodised	I could have been iodising you could have been iodising he could have been iodising we could have been iodising you could have been iodising they could have been iodising

Negation

Simple form	V-ing form
I couldn't iodise you couldn't iodise he couldn't iodise we couldn't iodise you couldn't iodise they couldn't iodise	I couldn't be iodising you couldn't be iodising he couldn't be iodising we couldn't be iodising you couldn't be iodising they couldn't be iodising
Perfect	V-ing perfect
I couldn't have iodised you couldn't have iodised he couldn't have iodised we couldn't have iodised you couldn't have iodised they couldn't have iodised	I couldn't have been iodising you couldn't have been iodising he couldn't have been iodising we couldn't have been iodising you couldn't have been iodising they couldn't have been iodising

Interrogative form

Simple form	V-ing form
could I iodise? could you iodise? could he iodise? could we iodise? could you iodise? could they iodise?	could I be iodising? could you be iodising? could he be iodising? could we be iodising? could you be iodising? could they be iodising?
Perfect	V-ing perfect
could I have iodised? could you have iodised? could he have iodised? could we have iodised? could you have iodised? could they have iodised?	could I have been iodising? could you have been iodising? could he have been iodising? could we have been iodising? could you have been iodising? could they have been iodising?

Interro-negative form

Simple form	V-ing form
couldn't I iodise? couldn't you iodise? couldn't he iodise? couldn't we iodise? couldn't you iodise? couldn't they iodise?	couldn't I be iodising? couldn't you be iodising? couldn't he be iodising? couldn't we be iodising? couldn't you be iodising? couldn't they be iodising?
Perfect	V-ing perfect
couldn't I have iodised? couldn't you have iodised? couldn't he have iodised? couldn't we have iodised? couldn't you have iodised? couldn't they have iodised?	couldn't I have been iodising? couldn't you have been iodising? couldn't he have been iodising? couldn't we have been iodising? couldn't you have been iodising? couldn't they have been iodising?