English verb conjugation
COULD DECARBURISE

Regular verb: decarburise - decarburised - decarburised

Affirmation

Simple form	V-ing form
I could decarburise you could decarburise he could decarburise we could decarburise you could decarburise they could decarburise	I could be decarburising you could be decarburising he could be decarburising we could be decarburising you could be decarburising they could be decarburising
Perfect	V-ing perfect
I could have decarburised you could have decarburised he could have decarburised we could have decarburised you could have decarburised they could have decarburised	I could have been decarburising you could have been decarburising he could have been decarburising we could have been decarburising you could have been decarburising they could have been decarburising

Negation

Simple form	V-ing form
I could not decarburise you could not decarburise he could not decarburise we could not decarburise you could not decarburise they could not decarburise	I could not be decarburising you could not be decarburising he could not be decarburising we could not be decarburising you could not be decarburising they could not be decarburising
Perfect	V-ing perfect
I could not have decarburised you could not have decarburised he could not have decarburised we could not have decarburised you could not have decarburised they could not have decarburised	I could not have been decarburising you could not have been decarburising he could not have been decarburising we could not have been decarburising you could not have been decarburising they could not have been decarburising

Interrogative form

Simple form	V-ing form
could I decarburise? could you decarburise? could he decarburise? could we decarburise? could you decarburise? could they decarburise?	could I be decarburising? could you be decarburising? could he be decarburising? could we be decarburising? could you be decarburising? could they be decarburising?
Perfect	V-ing perfect
could I have decarburised? could you have decarburised? could he have decarburised? could we have decarburised? could you have decarburised? could they have decarburised?	could I have been decarburising? could you have been decarburising? could he have been decarburising? could we have been decarburising? could you have been decarburising? could they have been decarburising?

Interro-negative form

Simple form	V-ing form
could I not decarburise? could you not decarburise? could he not decarburise? could we not decarburise? could you not decarburise? could they not decarburise?	could I not be decarburising? could you not be decarburising? could he not be decarburising? could we not be decarburising? could you not be decarburising? could they not be decarburising?
Perfect	V-ing perfect
could I not have decarburised? could you not have decarburised? could he not have decarburised? could we not have decarburised? could you not have decarburised? could they not have decarburised?	could I not have been decarburising? could you not have been decarburising? could he not have been decarburising? could we not have been decarburising? could you not have been decarburising? could they not have been decarburising?