English verb conjugation
SHOULD BACKSTROKE

Regular verb: backstroke - backstroked - backstroked

Affirmation

Simple form	V-ing form
I should backstroke you should backstroke he should backstroke we should backstroke you should backstroke they should backstroke	I should be backstroking you should be backstroking he should be backstroking we should be backstroking you should be backstroking they should be backstroking
Perfect	V-ing perfect
I should have backstroked you should have backstroked he should have backstroked we should have backstroked you should have backstroked they should have backstroked	I should have been backstroking you should have been backstroking he should have been backstroking we should have been backstroking you should have been backstroking they should have been backstroking

Negation

Simple form	V-ing form
I should not backstroke you should not backstroke he should not backstroke we should not backstroke you should not backstroke they should not backstroke	I should not be backstroking you should not be backstroking he should not be backstroking we should not be backstroking you should not be backstroking they should not be backstroking
Perfect	V-ing perfect
I should not have backstroked you should not have backstroked he should not have backstroked we should not have backstroked you should not have backstroked they should not have backstroked	I should not have been backstroking you should not have been backstroking he should not have been backstroking we should not have been backstroking you should not have been backstroking they should not have been backstroking

Interrogative form

Simple form	V-ing form
should I backstroke? should you backstroke? should he backstroke? should we backstroke? should you backstroke? should they backstroke?	should I be backstroking? should you be backstroking? should he be backstroking? should we be backstroking? should you be backstroking? should they be backstroking?
Perfect	V-ing perfect
should I have backstroked? should you have backstroked? should he have backstroked? should we have backstroked? should you have backstroked? should they have backstroked?	should I have been backstroking? should you have been backstroking? should he have been backstroking? should we have been backstroking? should you have been backstroking? should they have been backstroking?

Interro-negative form

Simple form	V-ing form
should I not backstroke? should you not backstroke? should he not backstroke? should we not backstroke? should you not backstroke? should they not backstroke?	should I not be backstroking? should you not be backstroking? should he not be backstroking? should we not be backstroking? should you not be backstroking? should they not be backstroking?
Perfect	V-ing perfect
should I not have backstroked? should you not have backstroked? should he not have backstroked? should we not have backstroked? should you not have backstroked? should they not have backstroked?	should I not have been backstroking? should you not have been backstroking? should he not have been backstroking? should we not have been backstroking? should you not have been backstroking? should they not have been backstroking?