should retune
Regular verb: retune - retuned- retuned

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I should retune
you should retune
he should retune
we should retune
you should retune
they should retune 	I should be retuning
you should be retuning
he should be retuning
we should be retuning
you should be retuning
they should be retuning	I should have retuned
you should have retuned
he should have retuned
we should have retuned
you should have retuned
they should have retuned	I should have been retuning
you should have been retuning
he should have been retuning
we should have been retuning
you should have been retuning
they should have been retuning	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I should not retune
you should not retune
he should not retune
we should not retune
you should not retune
they should not retune 	I should not be retuning
you should not be retuning
he should not be retuning
we should not be retuning
you should not be retuning
they should not be retuning	I should not have retuned
you should not have retuned
he should not have retuned
we should not have retuned
you should not have retuned
they should not have retuned	I should not have been retuning
you should not have been retuning
he should not have been retuning
we should not have been retuning
you should not have been retuning
they should not have been retuning	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
should I retune?
should you retune?
should he retune?
should we retune?
should you retune?
should they retune? 	should I be retuning?
should you be retuning?
should he be retuning?
should we be retuning?
should you be retuning?
should they be retuning? 	should I have retuned?
should you have retuned?
should he have retuned?
should we have retuned?
should you have retuned?
should they have retuned? 	should I have been retuning?
should you have been retuning?
should he have been retuning?
should we have been retuning?
should you have been retuning?
should they have been retuning? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
should I not retune?
should you not retune?
should he not retune?
should we not retune?
should you not retune?
should they not retune? 	should I not be retuning?
should you not be retuning?
should he not be retuning?
should we not be retuning?
should you not be retuning?
should they not be retuning? 	should I not have retuned?
should you not have retuned?
should he not have retuned?
should we not have retuned?
should you not have retuned?
should they not have retuned? 	should I not have been retuning?
should you not have been retuning?
should he not have been retuning?
should we not have been retuning?
should you not have been retuning?
should they not have been retuning?