English verb conjugation
COULD RATIONALISE

Regular verb: rationalise - rationalised - rationalised

Affirmation

Simple form	V-ing form
I could rationalise you could rationalise he could rationalise we could rationalise you could rationalise they could rationalise	I could be rationalising you could be rationalising he could be rationalising we could be rationalising you could be rationalising they could be rationalising
Perfect	V-ing perfect
I could have rationalised you could have rationalised he could have rationalised we could have rationalised you could have rationalised they could have rationalised	I could have been rationalising you could have been rationalising he could have been rationalising we could have been rationalising you could have been rationalising they could have been rationalising

Negation

Simple form	V-ing form
I couldn't rationalise you couldn't rationalise he couldn't rationalise we couldn't rationalise you couldn't rationalise they couldn't rationalise	I couldn't be rationalising you couldn't be rationalising he couldn't be rationalising we couldn't be rationalising you couldn't be rationalising they couldn't be rationalising
Perfect	V-ing perfect
I couldn't have rationalised you couldn't have rationalised he couldn't have rationalised we couldn't have rationalised you couldn't have rationalised they couldn't have rationalised	I couldn't have been rationalising you couldn't have been rationalising he couldn't have been rationalising we couldn't have been rationalising you couldn't have been rationalising they couldn't have been rationalising

Interrogative form

Simple form	V-ing form
could I rationalise? could you rationalise? could he rationalise? could we rationalise? could you rationalise? could they rationalise?	could I be rationalising? could you be rationalising? could he be rationalising? could we be rationalising? could you be rationalising? could they be rationalising?
Perfect	V-ing perfect
could I have rationalised? could you have rationalised? could he have rationalised? could we have rationalised? could you have rationalised? could they have rationalised?	could I have been rationalising? could you have been rationalising? could he have been rationalising? could we have been rationalising? could you have been rationalising? could they have been rationalising?

Interro-negative form

Simple form	V-ing form
couldn't I rationalise? couldn't you rationalise? couldn't he rationalise? couldn't we rationalise? couldn't you rationalise? couldn't they rationalise?	couldn't I be rationalising? couldn't you be rationalising? couldn't he be rationalising? couldn't we be rationalising? couldn't you be rationalising? couldn't they be rationalising?
Perfect	V-ing perfect
couldn't I have rationalised? couldn't you have rationalised? couldn't he have rationalised? couldn't we have rationalised? couldn't you have rationalised? couldn't they have rationalised?	couldn't I have been rationalising? couldn't you have been rationalising? couldn't he have been rationalising? couldn't we have been rationalising? couldn't you have been rationalising? couldn't they have been rationalising?