English verb conjugation
COULD CARBURISE

Regular verb: carburise - carburised - carburised

Affirmation

Simple form	V-ing form
I could carburise you could carburise he could carburise we could carburise you could carburise they could carburise	I could be carburising you could be carburising he could be carburising we could be carburising you could be carburising they could be carburising
Perfect	V-ing perfect
I could have carburised you could have carburised he could have carburised we could have carburised you could have carburised they could have carburised	I could have been carburising you could have been carburising he could have been carburising we could have been carburising you could have been carburising they could have been carburising

Negation

Simple form	V-ing form
I couldn't carburise you couldn't carburise he couldn't carburise we couldn't carburise you couldn't carburise they couldn't carburise	I couldn't be carburising you couldn't be carburising he couldn't be carburising we couldn't be carburising you couldn't be carburising they couldn't be carburising
Perfect	V-ing perfect
I couldn't have carburised you couldn't have carburised he couldn't have carburised we couldn't have carburised you couldn't have carburised they couldn't have carburised	I couldn't have been carburising you couldn't have been carburising he couldn't have been carburising we couldn't have been carburising you couldn't have been carburising they couldn't have been carburising

Interrogative form

Simple form	V-ing form
could I carburise? could you carburise? could he carburise? could we carburise? could you carburise? could they carburise?	could I be carburising? could you be carburising? could he be carburising? could we be carburising? could you be carburising? could they be carburising?
Perfect	V-ing perfect
could I have carburised? could you have carburised? could he have carburised? could we have carburised? could you have carburised? could they have carburised?	could I have been carburising? could you have been carburising? could he have been carburising? could we have been carburising? could you have been carburising? could they have been carburising?

Interro-negative form

Simple form	V-ing form
couldn't I carburise? couldn't you carburise? couldn't he carburise? couldn't we carburise? couldn't you carburise? couldn't they carburise?	couldn't I be carburising? couldn't you be carburising? couldn't he be carburising? couldn't we be carburising? couldn't you be carburising? couldn't they be carburising?
Perfect	V-ing perfect
couldn't I have carburised? couldn't you have carburised? couldn't he have carburised? couldn't we have carburised? couldn't you have carburised? couldn't they have carburised?	couldn't I have been carburising? couldn't you have been carburising? couldn't he have been carburising? couldn't we have been carburising? couldn't you have been carburising? couldn't they have been carburising?