should calk
Regular verb: calk - calked- calked

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I should calk
you should calk
he should calk
we should calk
you should calk
they should calk 	I should be calking
you should be calking
he should be calking
we should be calking
you should be calking
they should be calking	I should have calked
you should have calked
he should have calked
we should have calked
you should have calked
they should have calked	I should have been calking
you should have been calking
he should have been calking
we should have been calking
you should have been calking
they should have been calking	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I should not calk
you should not calk
he should not calk
we should not calk
you should not calk
they should not calk 	I should not be calking
you should not be calking
he should not be calking
we should not be calking
you should not be calking
they should not be calking	I should not have calked
you should not have calked
he should not have calked
we should not have calked
you should not have calked
they should not have calked	I should not have been calking
you should not have been calking
he should not have been calking
we should not have been calking
you should not have been calking
they should not have been calking	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
should I calk?
should you calk?
should he calk?
should we calk?
should you calk?
should they calk? 	should I be calking?
should you be calking?
should he be calking?
should we be calking?
should you be calking?
should they be calking? 	should I have calked?
should you have calked?
should he have calked?
should we have calked?
should you have calked?
should they have calked? 	should I have been calking?
should you have been calking?
should he have been calking?
should we have been calking?
should you have been calking?
should they have been calking? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
should I not calk?
should you not calk?
should he not calk?
should we not calk?
should you not calk?
should they not calk? 	should I not be calking?
should you not be calking?
should he not be calking?
should we not be calking?
should you not be calking?
should they not be calking? 	should I not have calked?
should you not have calked?
should he not have calked?
should we not have calked?
should you not have calked?
should they not have calked? 	should I not have been calking?
should you not have been calking?
should he not have been calking?
should we not have been calking?
should you not have been calking?
should they not have been calking?