English verb conjugation
COULD SUMMARISE

Regular verb: summarise - summarised - summarised

Affirmation

Simple form	V-ing form
I could summarise you could summarise he could summarise we could summarise you could summarise they could summarise	I could be summarising you could be summarising he could be summarising we could be summarising you could be summarising they could be summarising
Perfect	V-ing perfect
I could have summarised you could have summarised he could have summarised we could have summarised you could have summarised they could have summarised	I could have been summarising you could have been summarising he could have been summarising we could have been summarising you could have been summarising they could have been summarising

Negation

Simple form	V-ing form
I could not summarise you could not summarise he could not summarise we could not summarise you could not summarise they could not summarise	I could not be summarising you could not be summarising he could not be summarising we could not be summarising you could not be summarising they could not be summarising
Perfect	V-ing perfect
I could not have summarised you could not have summarised he could not have summarised we could not have summarised you could not have summarised they could not have summarised	I could not have been summarising you could not have been summarising he could not have been summarising we could not have been summarising you could not have been summarising they could not have been summarising

Interrogative form

Simple form	V-ing form
could I summarise? could you summarise? could he summarise? could we summarise? could you summarise? could they summarise?	could I be summarising? could you be summarising? could he be summarising? could we be summarising? could you be summarising? could they be summarising?
Perfect	V-ing perfect
could I have summarised? could you have summarised? could he have summarised? could we have summarised? could you have summarised? could they have summarised?	could I have been summarising? could you have been summarising? could he have been summarising? could we have been summarising? could you have been summarising? could they have been summarising?

Interro-negative form

Simple form	V-ing form
could I not summarise? could you not summarise? could he not summarise? could we not summarise? could you not summarise? could they not summarise?	could I not be summarising? could you not be summarising? could he not be summarising? could we not be summarising? could you not be summarising? could they not be summarising?
Perfect	V-ing perfect
could I not have summarised? could you not have summarised? could he not have summarised? could we not have summarised? could you not have summarised? could they not have summarised?	could I not have been summarising? could you not have been summarising? could he not have been summarising? could we not have been summarising? could you not have been summarising? could they not have been summarising?