English verb conjugation
SHOULD TUMBLE

Regular verb: tumble - tumbled - tumbled

Affirmation

Simple form	V-ing form
I should tumble you should tumble she should tumble we should tumble you should tumble they should tumble	I should be tumbling you should be tumbling she should be tumbling we should be tumbling you should be tumbling they should be tumbling
Perfect	V-ing perfect
I should have tumbled you should have tumbled she should have tumbled we should have tumbled you should have tumbled they should have tumbled	I should have been tumbling you should have been tumbling she should have been tumbling we should have been tumbling you should have been tumbling they should have been tumbling

Negation

Simple form	V-ing form
I should not tumble you should not tumble she should not tumble we should not tumble you should not tumble they should not tumble	I should not be tumbling you should not be tumbling she should not be tumbling we should not be tumbling you should not be tumbling they should not be tumbling
Perfect	V-ing perfect
I should not have tumbled you should not have tumbled she should not have tumbled we should not have tumbled you should not have tumbled they should not have tumbled	I should not have been tumbling you should not have been tumbling she should not have been tumbling we should not have been tumbling you should not have been tumbling they should not have been tumbling

Interrogative form

Simple form	V-ing form
should I tumble? should you tumble? should she tumble? should we tumble? should you tumble? should they tumble?	should I be tumbling? should you be tumbling? should she be tumbling? should we be tumbling? should you be tumbling? should they be tumbling?
Perfect	V-ing perfect
should I have tumbled? should you have tumbled? should she have tumbled? should we have tumbled? should you have tumbled? should they have tumbled?	should I have been tumbling? should you have been tumbling? should she have been tumbling? should we have been tumbling? should you have been tumbling? should they have been tumbling?

Interro-negative form

Simple form	V-ing form
should I not tumble? should you not tumble? should she not tumble? should we not tumble? should you not tumble? should they not tumble?	should I not be tumbling? should you not be tumbling? should she not be tumbling? should we not be tumbling? should you not be tumbling? should they not be tumbling?
Perfect	V-ing perfect
should I not have tumbled? should you not have tumbled? should she not have tumbled? should we not have tumbled? should you not have tumbled? should they not have tumbled?	should I not have been tumbling? should you not have been tumbling? should she not have been tumbling? should we not have been tumbling? should you not have been tumbling? should they not have been tumbling?