English verb conjugation
SHOULD LUMBER

Regular verb: lumber - lumbered - lumbered

Affirmation

Simple form	V-ing form
I should lumber you should lumber he should lumber we should lumber you should lumber they should lumber	I should be lumbering you should be lumbering he should be lumbering we should be lumbering you should be lumbering they should be lumbering
Perfect	V-ing perfect
I should have lumbered you should have lumbered he should have lumbered we should have lumbered you should have lumbered they should have lumbered	I should have been lumbering you should have been lumbering he should have been lumbering we should have been lumbering you should have been lumbering they should have been lumbering

Negation

Simple form	V-ing form
I should not lumber you should not lumber he should not lumber we should not lumber you should not lumber they should not lumber	I should not be lumbering you should not be lumbering he should not be lumbering we should not be lumbering you should not be lumbering they should not be lumbering
Perfect	V-ing perfect
I should not have lumbered you should not have lumbered he should not have lumbered we should not have lumbered you should not have lumbered they should not have lumbered	I should not have been lumbering you should not have been lumbering he should not have been lumbering we should not have been lumbering you should not have been lumbering they should not have been lumbering

Interrogative form

Simple form	V-ing form
should I lumber? should you lumber? should he lumber? should we lumber? should you lumber? should they lumber?	should I be lumbering? should you be lumbering? should he be lumbering? should we be lumbering? should you be lumbering? should they be lumbering?
Perfect	V-ing perfect
should I have lumbered? should you have lumbered? should he have lumbered? should we have lumbered? should you have lumbered? should they have lumbered?	should I have been lumbering? should you have been lumbering? should he have been lumbering? should we have been lumbering? should you have been lumbering? should they have been lumbering?

Interro-negative form

Simple form	V-ing form
should I not lumber? should you not lumber? should he not lumber? should we not lumber? should you not lumber? should they not lumber?	should I not be lumbering? should you not be lumbering? should he not be lumbering? should we not be lumbering? should you not be lumbering? should they not be lumbering?
Perfect	V-ing perfect
should I not have lumbered? should you not have lumbered? should he not have lumbered? should we not have lumbered? should you not have lumbered? should they not have lumbered?	should I not have been lumbering? should you not have been lumbering? should he not have been lumbering? should we not have been lumbering? should you not have been lumbering? should they not have been lumbering?