should trip
Regular verb: trip - tripped- tripped

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

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I should not trip
you should not trip
she should not trip
we should not trip
you should not trip
they should not trip 	I should not be tripping
you should not be tripping
she should not be tripping
we should not be tripping
you should not be tripping
they should not be tripping	I should not have tripped
you should not have tripped
she should not have tripped
we should not have tripped
you should not have tripped
they should not have tripped	I should not have been tripping
you should not have been tripping
she should not have been tripping
we should not have been tripping
you should not have been tripping
they should not 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 	
should I not trip?
should you not trip?
should she not trip?
should we not trip?
should you not trip?
should they not trip? 	should I not be tripping?
should you not be tripping?
should she not be tripping?
should we not be tripping?
should you not be tripping?
should they not be tripping? 	should I not have tripped?
should you not have tripped?
should she not have tripped?
should we not have tripped?
should you not have tripped?
should they not have tripped? 	should I not have been tripping?
should you not have been tripping?
should she not have been tripping?
should we not have been tripping?
should you not have been tripping?
should they not have been tripping?