English verb conjugation
SHOULD MARBLE

Regular verb: marble - marbled - marbled

Affirmation

Simple form	V-ing form
I should marble you should marble he should marble we should marble you should marble they should marble	I should be marbling you should be marbling he should be marbling we should be marbling you should be marbling they should be marbling
Perfect	V-ing perfect
I should have marbled you should have marbled he should have marbled we should have marbled you should have marbled they should have marbled	I should have been marbling you should have been marbling he should have been marbling we should have been marbling you should have been marbling they should have been marbling

Negation

Simple form	V-ing form
I should not marble you should not marble he should not marble we should not marble you should not marble they should not marble	I should not be marbling you should not be marbling he should not be marbling we should not be marbling you should not be marbling they should not be marbling
Perfect	V-ing perfect
I should not have marbled you should not have marbled he should not have marbled we should not have marbled you should not have marbled they should not have marbled	I should not have been marbling you should not have been marbling he should not have been marbling we should not have been marbling you should not have been marbling they should not have been marbling

Interrogative form

Simple form	V-ing form
should I marble? should you marble? should he marble? should we marble? should you marble? should they marble?	should I be marbling? should you be marbling? should he be marbling? should we be marbling? should you be marbling? should they be marbling?
Perfect	V-ing perfect
should I have marbled? should you have marbled? should he have marbled? should we have marbled? should you have marbled? should they have marbled?	should I have been marbling? should you have been marbling? should he have been marbling? should we have been marbling? should you have been marbling? should they have been marbling?

Interro-negative form

Simple form	V-ing form
should I not marble? should you not marble? should he not marble? should we not marble? should you not marble? should they not marble?	should I not be marbling? should you not be marbling? should he not be marbling? should we not be marbling? should you not be marbling? should they not be marbling?
Perfect	V-ing perfect
should I not have marbled? should you not have marbled? should he not have marbled? should we not have marbled? should you not have marbled? should they not have marbled?	should I not have been marbling? should you not have been marbling? should he not have been marbling? should we not have been marbling? should you not have been marbling? should they not have been marbling?