should swab
Regular verb: swab - swabed- swabed

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I should swab
you should swab
he should swab
we should swab
you should swab
they should swab 	I should be swabing
you should be swabing
he should be swabing
we should be swabing
you should be swabing
they should be swabing	I should have swabed
you should have swabed
he should have swabed
we should have swabed
you should have swabed
they should have swabed	I should have been swabing
you should have been swabing
he should have been swabing
we should have been swabing
you should have been swabing
they should have been swabing	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I should not swab
you should not swab
he should not swab
we should not swab
you should not swab
they should not swab 	I should not be swabing
you should not be swabing
he should not be swabing
we should not be swabing
you should not be swabing
they should not be swabing	I should not have swabed
you should not have swabed
he should not have swabed
we should not have swabed
you should not have swabed
they should not have swabed	I should not have been swabing
you should not have been swabing
he should not have been swabing
we should not have been swabing
you should not have been swabing
they should not have been swabing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
should I swab?
should you swab?
should he swab?
should we swab?
should you swab?
should they swab? 	should I be swabing?
should you be swabing?
should he be swabing?
should we be swabing?
should you be swabing?
should they be swabing? 	should I have swabed?
should you have swabed?
should he have swabed?
should we have swabed?
should you have swabed?
should they have swabed? 	should I have been swabing?
should you have been swabing?
should he have been swabing?
should we have been swabing?
should you have been swabing?
should they have been swabing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
should I not swab?
should you not swab?
should he not swab?
should we not swab?
should you not swab?
should they not swab? 	should I not be swabing?
should you not be swabing?
should he not be swabing?
should we not be swabing?
should you not be swabing?
should they not be swabing? 	should I not have swabed?
should you not have swabed?
should he not have swabed?
should we not have swabed?
should you not have swabed?
should they not have swabed? 	should I not have been swabing?
should you not have been swabing?
should he not have been swabing?
should we not have been swabing?
should you not have been swabing?
should they not have been swabing?