English verb conjugation
SHOULD PROP

Regular verb: prop - propped - propped

Affirmation

Simple form	V-ing form
I should prop you should prop she should prop we should prop you should prop they should prop	I should be propping you should be propping she should be propping we should be propping you should be propping they should be propping
Perfect	V-ing perfect
I should have propped you should have propped she should have propped we should have propped you should have propped they should have propped	I should have been propping you should have been propping she should have been propping we should have been propping you should have been propping they should have been propping

Negation

Simple form	V-ing form
I should not prop you should not prop she should not prop we should not prop you should not prop they should not prop	I should not be propping you should not be propping she should not be propping we should not be propping you should not be propping they should not be propping
Perfect	V-ing perfect
I should not have propped you should not have propped she should not have propped we should not have propped you should not have propped they should not have propped	I should not have been propping you should not have been propping she should not have been propping we should not have been propping you should not have been propping they should not have been propping

Interrogative form

Simple form	V-ing form
should I prop? should you prop? should she prop? should we prop? should you prop? should they prop?	should I be propping? should you be propping? should she be propping? should we be propping? should you be propping? should they be propping?
Perfect	V-ing perfect
should I have propped? should you have propped? should she have propped? should we have propped? should you have propped? should they have propped?	should I have been propping? should you have been propping? should she have been propping? should we have been propping? should you have been propping? should they have been propping?

Interro-negative form

Simple form	V-ing form
should I not prop? should you not prop? should she not prop? should we not prop? should you not prop? should they not prop?	should I not be propping? should you not be propping? should she not be propping? should we not be propping? should you not be propping? should they not be propping?
Perfect	V-ing perfect
should I not have propped? should you not have propped? should she not have propped? should we not have propped? should you not have propped? should they not have propped?	should I not have been propping? should you not have been propping? should she not have been propping? should we not have been propping? should you not have been propping? should they not have been propping?