should warble
Regular verb: warble - warbled- warbled

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I should warble
you should warble
he should warble
we should warble
you should warble
they should warble 	I should be warbling
you should be warbling
he should be warbling
we should be warbling
you should be warbling
they should be warbling	I should have warbled
you should have warbled
he should have warbled
we should have warbled
you should have warbled
they should have warbled	I should have been warbling
you should have been warbling
he should have been warbling
we should have been warbling
you should have been warbling
they should have been warbling	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I should not warble
you should not warble
he should not warble
we should not warble
you should not warble
they should not warble 	I should not be warbling
you should not be warbling
he should not be warbling
we should not be warbling
you should not be warbling
they should not be warbling	I should not have warbled
you should not have warbled
he should not have warbled
we should not have warbled
you should not have warbled
they should not have warbled	I should not have been warbling
you should not have been warbling
he should not have been warbling
we should not have been warbling
you should not have been warbling
they should not have been warbling	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
should I warble?
should you warble?
should he warble?
should we warble?
should you warble?
should they warble? 	should I be warbling?
should you be warbling?
should he be warbling?
should we be warbling?
should you be warbling?
should they be warbling? 	should I have warbled?
should you have warbled?
should he have warbled?
should we have warbled?
should you have warbled?
should they have warbled? 	should I have been warbling?
should you have been warbling?
should he have been warbling?
should we have been warbling?
should you have been warbling?
should they have been warbling? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
should I not warble?
should you not warble?
should he not warble?
should we not warble?
should you not warble?
should they not warble? 	should I not be warbling?
should you not be warbling?
should he not be warbling?
should we not be warbling?
should you not be warbling?
should they not be warbling? 	should I not have warbled?
should you not have warbled?
should he not have warbled?
should we not have warbled?
should you not have warbled?
should they not have warbled? 	should I not have been warbling?
should you not have been warbling?
should he not have been warbling?
should we not have been warbling?
should you not have been warbling?
should they not have been warbling?