English verb conjugation
COULD RUBBERISE

Regular verb: rubberise - rubberised - rubberised

Affirmation

Simple form	V-ing form
I could rubberise you could rubberise he could rubberise we could rubberise you could rubberise they could rubberise	I could be rubberising you could be rubberising he could be rubberising we could be rubberising you could be rubberising they could be rubberising
Perfect	V-ing perfect
I could have rubberised you could have rubberised he could have rubberised we could have rubberised you could have rubberised they could have rubberised	I could have been rubberising you could have been rubberising he could have been rubberising we could have been rubberising you could have been rubberising they could have been rubberising

Negation

Simple form	V-ing form
I couldn't rubberise you couldn't rubberise he couldn't rubberise we couldn't rubberise you couldn't rubberise they couldn't rubberise	I couldn't be rubberising you couldn't be rubberising he couldn't be rubberising we couldn't be rubberising you couldn't be rubberising they couldn't be rubberising
Perfect	V-ing perfect
I couldn't have rubberised you couldn't have rubberised he couldn't have rubberised we couldn't have rubberised you couldn't have rubberised they couldn't have rubberised	I couldn't have been rubberising you couldn't have been rubberising he couldn't have been rubberising we couldn't have been rubberising you couldn't have been rubberising they couldn't have been rubberising

Interrogative form

Simple form	V-ing form
could I rubberise? could you rubberise? could he rubberise? could we rubberise? could you rubberise? could they rubberise?	could I be rubberising? could you be rubberising? could he be rubberising? could we be rubberising? could you be rubberising? could they be rubberising?
Perfect	V-ing perfect
could I have rubberised? could you have rubberised? could he have rubberised? could we have rubberised? could you have rubberised? could they have rubberised?	could I have been rubberising? could you have been rubberising? could he have been rubberising? could we have been rubberising? could you have been rubberising? could they have been rubberising?

Interro-negative form

Simple form	V-ing form
couldn't I rubberise? couldn't you rubberise? couldn't he rubberise? couldn't we rubberise? couldn't you rubberise? couldn't they rubberise?	couldn't I be rubberising? couldn't you be rubberising? couldn't he be rubberising? couldn't we be rubberising? couldn't you be rubberising? couldn't they be rubberising?
Perfect	V-ing perfect
couldn't I have rubberised? couldn't you have rubberised? couldn't he have rubberised? couldn't we have rubberised? couldn't you have rubberised? couldn't they have rubberised?	couldn't I have been rubberising? couldn't you have been rubberising? couldn't he have been rubberising? couldn't we have been rubberising? couldn't you have been rubberising? couldn't they have been rubberising?