should trill
Regular verb: trill - trilled- trilled

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I should trill
you should trill
he should trill
we should trill
you should trill
they should trill 	I should be trilling
you should be trilling
he should be trilling
we should be trilling
you should be trilling
they should be trilling	I should have trilled
you should have trilled
he should have trilled
we should have trilled
you should have trilled
they should have trilled	I should have been trilling
you should have been trilling
he should have been trilling
we should have been trilling
you should have been trilling
they should have been trilling	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I should not trill
you should not trill
he should not trill
we should not trill
you should not trill
they should not trill 	I should not be trilling
you should not be trilling
he should not be trilling
we should not be trilling
you should not be trilling
they should not be trilling	I should not have trilled
you should not have trilled
he should not have trilled
we should not have trilled
you should not have trilled
they should not have trilled	I should not have been trilling
you should not have been trilling
he should not have been trilling
we should not have been trilling
you should not have been trilling
they should not have been trilling	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
should I trill?
should you trill?
should he trill?
should we trill?
should you trill?
should they trill? 	should I be trilling?
should you be trilling?
should he be trilling?
should we be trilling?
should you be trilling?
should they be trilling? 	should I have trilled?
should you have trilled?
should he have trilled?
should we have trilled?
should you have trilled?
should they have trilled? 	should I have been trilling?
should you have been trilling?
should he have been trilling?
should we have been trilling?
should you have been trilling?
should they have been trilling? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
should I not trill?
should you not trill?
should he not trill?
should we not trill?
should you not trill?
should they not trill? 	should I not be trilling?
should you not be trilling?
should he not be trilling?
should we not be trilling?
should you not be trilling?
should they not be trilling? 	should I not have trilled?
should you not have trilled?
should he not have trilled?
should we not have trilled?
should you not have trilled?
should they not have trilled? 	should I not have been trilling?
should you not have been trilling?
should he not have been trilling?
should we not have been trilling?
should you not have been trilling?
should they not have been trilling?