should trip
Regular verb: trip - tripped- tripped

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I'd trip
you'd trip
she'd trip
we'd trip
you'd trip
they'd trip 	I'd be tripping
you'd be tripping
she'd be tripping
we'd be tripping
you'd be tripping
they'd be tripping	I should've tripped
you should've tripped
she should've tripped
we should've tripped
you should've tripped
they should've tripped	I should've been tripping
you should've been tripping
she should've been tripping
we should've been tripping
you should've been tripping
they should've been tripping	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I shouldn't trip
you shouldn't trip
she shouldn't trip
we shouldn't trip
you shouldn't trip
they shouldn't trip 	I shouldn't be tripping
you shouldn't be tripping
she shouldn't be tripping
we shouldn't be tripping
you shouldn't be tripping
they shouldn't be tripping	I shouldn't have tripped
you shouldn't have tripped
she shouldn't have tripped
we shouldn't have tripped
you shouldn't have tripped
they shouldn't have tripped	I shouldn't have been tripping
you shouldn't have been tripping
she shouldn't have been tripping
we shouldn't have been tripping
you shouldn't have been tripping
they shouldn't have been tripping	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
should I trip?
should you trip?
should she trip?
should we trip?
should you trip?
should they trip? 	should I be tripping?
should you be tripping?
should she be tripping?
should we be tripping?
should you be tripping?
should they be tripping? 	should I have tripped?
should you have tripped?
should she have tripped?
should we have tripped?
should you have tripped?
should they have tripped? 	should I have been tripping?
should you have been tripping?
should she have been tripping?
should we have been tripping?
should you have been tripping?
should they have been tripping? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
shouldn't I trip?
shouldn't you trip?
shouldn't she trip?
shouldn't we trip?
shouldn't you trip?
shouldn't they trip? 	shouldn't I be tripping?
shouldn't you be tripping?
shouldn't she be tripping?
shouldn't we be tripping?
shouldn't you be tripping?
shouldn't they be tripping? 	shouldn't I have tripped?
shouldn't you have tripped?
shouldn't she have tripped?
shouldn't we have tripped?
shouldn't you have tripped?
shouldn't they have tripped? 	shouldn't I have been tripping?
shouldn't you have been tripping?
shouldn't she have been tripping?
shouldn't we have been tripping?
shouldn't you have been tripping?
shouldn't they have been tripping?