should err
Regular verb: err - erred- erred

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I should err
you should err
she should err
we should err
you should err
they should err 	I should be erring
you should be erring
she should be erring
we should be erring
you should be erring
they should be erring	I should have erred
you should have erred
she should have erred
we should have erred
you should have erred
they should have erred	I should have been erring
you should have been erring
she should have been erring
we should have been erring
you should have been erring
they should have been erring	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I should not err
you should not err
she should not err
we should not err
you should not err
they should not err 	I should not be erring
you should not be erring
she should not be erring
we should not be erring
you should not be erring
they should not be erring	I should not have erred
you should not have erred
she should not have erred
we should not have erred
you should not have erred
they should not have erred	I should not have been erring
you should not have been erring
she should not have been erring
we should not have been erring
you should not have been erring
they should not have been erring	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
should I err?
should you err?
should she err?
should we err?
should you err?
should they err? 	should I be erring?
should you be erring?
should she be erring?
should we be erring?
should you be erring?
should they be erring? 	should I have erred?
should you have erred?
should she have erred?
should we have erred?
should you have erred?
should they have erred? 	should I have been erring?
should you have been erring?
should she have been erring?
should we have been erring?
should you have been erring?
should they have been erring? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
should I not err?
should you not err?
should she not err?
should we not err?
should you not err?
should they not err? 	should I not be erring?
should you not be erring?
should she not be erring?
should we not be erring?
should you not be erring?
should they not be erring? 	should I not have erred?
should you not have erred?
should she not have erred?
should we not have erred?
should you not have erred?
should they not have erred? 	should I not have been erring?
should you not have been erring?
should she not have been erring?
should we not have been erring?
should you not have been erring?
should they not have been erring?