English verb conjugation
COULD PLAGIARISE

Regular verb: plagiarise - plagiarised - plagiarised

Affirmation

Simple form	V-ing form
I could plagiarise you could plagiarise he could plagiarise we could plagiarise you could plagiarise they could plagiarise	I could be plagiarising you could be plagiarising he could be plagiarising we could be plagiarising you could be plagiarising they could be plagiarising
Perfect	V-ing perfect
I could have plagiarised you could have plagiarised he could have plagiarised we could have plagiarised you could have plagiarised they could have plagiarised	I could have been plagiarising you could have been plagiarising he could have been plagiarising we could have been plagiarising you could have been plagiarising they could have been plagiarising

Negation

Simple form	V-ing form
I could not plagiarise you could not plagiarise he could not plagiarise we could not plagiarise you could not plagiarise they could not plagiarise	I could not be plagiarising you could not be plagiarising he could not be plagiarising we could not be plagiarising you could not be plagiarising they could not be plagiarising
Perfect	V-ing perfect
I could not have plagiarised you could not have plagiarised he could not have plagiarised we could not have plagiarised you could not have plagiarised they could not have plagiarised	I could not have been plagiarising you could not have been plagiarising he could not have been plagiarising we could not have been plagiarising you could not have been plagiarising they could not have been plagiarising

Interrogative form

Simple form	V-ing form
could I plagiarise? could you plagiarise? could he plagiarise? could we plagiarise? could you plagiarise? could they plagiarise?	could I be plagiarising? could you be plagiarising? could he be plagiarising? could we be plagiarising? could you be plagiarising? could they be plagiarising?
Perfect	V-ing perfect
could I have plagiarised? could you have plagiarised? could he have plagiarised? could we have plagiarised? could you have plagiarised? could they have plagiarised?	could I have been plagiarising? could you have been plagiarising? could he have been plagiarising? could we have been plagiarising? could you have been plagiarising? could they have been plagiarising?

Interro-negative form

Simple form	V-ing form
could I not plagiarise? could you not plagiarise? could he not plagiarise? could we not plagiarise? could you not plagiarise? could they not plagiarise?	could I not be plagiarising? could you not be plagiarising? could he not be plagiarising? could we not be plagiarising? could you not be plagiarising? could they not be plagiarising?
Perfect	V-ing perfect
could I not have plagiarised? could you not have plagiarised? could he not have plagiarised? could we not have plagiarised? could you not have plagiarised? could they not have plagiarised?	could I not have been plagiarising? could you not have been plagiarising? could he not have been plagiarising? could we not have been plagiarising? could you not have been plagiarising? could they not have been plagiarising?