English verb conjugation
COULD ISOMERISE

Regular verb: isomerise - isomerised - isomerised

Affirmation

Simple form	V-ing form
I could isomerise you could isomerise he could isomerise we could isomerise you could isomerise they could isomerise	I could be isomerising you could be isomerising he could be isomerising we could be isomerising you could be isomerising they could be isomerising
Perfect	V-ing perfect
I could have isomerised you could have isomerised he could have isomerised we could have isomerised you could have isomerised they could have isomerised	I could have been isomerising you could have been isomerising he could have been isomerising we could have been isomerising you could have been isomerising they could have been isomerising

Negation

Simple form	V-ing form
I could not isomerise you could not isomerise he could not isomerise we could not isomerise you could not isomerise they could not isomerise	I could not be isomerising you could not be isomerising he could not be isomerising we could not be isomerising you could not be isomerising they could not be isomerising
Perfect	V-ing perfect
I could not have isomerised you could not have isomerised he could not have isomerised we could not have isomerised you could not have isomerised they could not have isomerised	I could not have been isomerising you could not have been isomerising he could not have been isomerising we could not have been isomerising you could not have been isomerising they could not have been isomerising

Interrogative form

Simple form	V-ing form
could I isomerise? could you isomerise? could he isomerise? could we isomerise? could you isomerise? could they isomerise?	could I be isomerising? could you be isomerising? could he be isomerising? could we be isomerising? could you be isomerising? could they be isomerising?
Perfect	V-ing perfect
could I have isomerised? could you have isomerised? could he have isomerised? could we have isomerised? could you have isomerised? could they have isomerised?	could I have been isomerising? could you have been isomerising? could he have been isomerising? could we have been isomerising? could you have been isomerising? could they have been isomerising?

Interro-negative form

Simple form	V-ing form
could I not isomerise? could you not isomerise? could he not isomerise? could we not isomerise? could you not isomerise? could they not isomerise?	could I not be isomerising? could you not be isomerising? could he not be isomerising? could we not be isomerising? could you not be isomerising? could they not be isomerising?
Perfect	V-ing perfect
could I not have isomerised? could you not have isomerised? could he not have isomerised? could we not have isomerised? could you not have isomerised? could they not have isomerised?	could I not have been isomerising? could you not have been isomerising? could he not have been isomerising? could we not have been isomerising? could you not have been isomerising? could they not have been isomerising?