should backcheck
Regular verb: backcheck - backchecked- backchecked

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I'd backcheck
you'd backcheck
she'd backcheck
we'd backcheck
you'd backcheck
they'd backcheck 	I'd be backchecking
you'd be backchecking
she'd be backchecking
we'd be backchecking
you'd be backchecking
they'd be backchecking	I should've backchecked
you should've backchecked
she should've backchecked
we should've backchecked
you should've backchecked
they should've backchecked	I should've been backchecking
you should've been backchecking
she should've been backchecking
we should've been backchecking
you should've been backchecking
they should've been backchecking	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I shouldn't backcheck
you shouldn't backcheck
she shouldn't backcheck
we shouldn't backcheck
you shouldn't backcheck
they shouldn't backcheck 	I shouldn't be backchecking
you shouldn't be backchecking
she shouldn't be backchecking
we shouldn't be backchecking
you shouldn't be backchecking
they shouldn't be backchecking	I shouldn't have backchecked
you shouldn't have backchecked
she shouldn't have backchecked
we shouldn't have backchecked
you shouldn't have backchecked
they shouldn't have backchecked	I shouldn't have been backchecking
you shouldn't have been backchecking
she shouldn't have been backchecking
we shouldn't have been backchecking
you shouldn't have been backchecking
they shouldn't have been backchecking	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
should I backcheck?
should you backcheck?
should she backcheck?
should we backcheck?
should you backcheck?
should they backcheck? 	should I be backchecking?
should you be backchecking?
should she be backchecking?
should we be backchecking?
should you be backchecking?
should they be backchecking? 	should I have backchecked?
should you have backchecked?
should she have backchecked?
should we have backchecked?
should you have backchecked?
should they have backchecked? 	should I have been backchecking?
should you have been backchecking?
should she have been backchecking?
should we have been backchecking?
should you have been backchecking?
should they have been backchecking? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
shouldn't I backcheck?
shouldn't you backcheck?
shouldn't she backcheck?
shouldn't we backcheck?
shouldn't you backcheck?
shouldn't they backcheck? 	shouldn't I be backchecking?
shouldn't you be backchecking?
shouldn't she be backchecking?
shouldn't we be backchecking?
shouldn't you be backchecking?
shouldn't they be backchecking? 	shouldn't I have backchecked?
shouldn't you have backchecked?
shouldn't she have backchecked?
shouldn't we have backchecked?
shouldn't you have backchecked?
shouldn't they have backchecked? 	shouldn't I have been backchecking?
shouldn't you have been backchecking?
shouldn't she have been backchecking?
shouldn't we have been backchecking?
shouldn't you have been backchecking?
shouldn't they have been backchecking?