English verb conjugation
SHOULD SIGNAL

Regular verb: signal - signalled - signalled

Affirmation

Simple form	V-ing form
I should signal you should signal he should signal we should signal you should signal they should signal	I should be signalling you should be signalling he should be signalling we should be signalling you should be signalling they should be signalling
Perfect	V-ing perfect
I should have signalled you should have signalled he should have signalled we should have signalled you should have signalled they should have signalled	I should have been signalling you should have been signalling he should have been signalling we should have been signalling you should have been signalling they should have been signalling

Negation

Simple form	V-ing form
I should not signal you should not signal he should not signal we should not signal you should not signal they should not signal	I should not be signalling you should not be signalling he should not be signalling we should not be signalling you should not be signalling they should not be signalling
Perfect	V-ing perfect
I should not have signalled you should not have signalled he should not have signalled we should not have signalled you should not have signalled they should not have signalled	I should not have been signalling you should not have been signalling he should not have been signalling we should not have been signalling you should not have been signalling they should not have been signalling

Interrogative form

Simple form	V-ing form
should I signal? should you signal? should he signal? should we signal? should you signal? should they signal?	should I be signalling? should you be signalling? should he be signalling? should we be signalling? should you be signalling? should they be signalling?
Perfect	V-ing perfect
should I have signalled? should you have signalled? should he have signalled? should we have signalled? should you have signalled? should they have signalled?	should I have been signalling? should you have been signalling? should he have been signalling? should we have been signalling? should you have been signalling? should they have been signalling?

Interro-negative form

Simple form	V-ing form
should I not signal? should you not signal? should he not signal? should we not signal? should you not signal? should they not signal?	should I not be signalling? should you not be signalling? should he not be signalling? should we not be signalling? should you not be signalling? should they not be signalling?
Perfect	V-ing perfect
should I not have signalled? should you not have signalled? should he not have signalled? should we not have signalled? should you not have signalled? should they not have signalled?	should I not have been signalling? should you not have been signalling? should he not have been signalling? should we not have been signalling? should you not have been signalling? should they not have been signalling?