should flash
Regular verb: flash - flashed- flashed

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I should flash
you should flash
she should flash
we should flash
you should flash
they should flash 	I should be flashing
you should be flashing
she should be flashing
we should be flashing
you should be flashing
they should be flashing	I should have flashed
you should have flashed
she should have flashed
we should have flashed
you should have flashed
they should have flashed	I should have been flashing
you should have been flashing
she should have been flashing
we should have been flashing
you should have been flashing
they should have been flashing	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I should not flash
you should not flash
she should not flash
we should not flash
you should not flash
they should not flash 	I should not be flashing
you should not be flashing
she should not be flashing
we should not be flashing
you should not be flashing
they should not be flashing	I should not have flashed
you should not have flashed
she should not have flashed
we should not have flashed
you should not have flashed
they should not have flashed	I should not have been flashing
you should not have been flashing
she should not have been flashing
we should not have been flashing
you should not have been flashing
they should not have been flashing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
should I flash?
should you flash?
should she flash?
should we flash?
should you flash?
should they flash? 	should I be flashing?
should you be flashing?
should she be flashing?
should we be flashing?
should you be flashing?
should they be flashing? 	should I have flashed?
should you have flashed?
should she have flashed?
should we have flashed?
should you have flashed?
should they have flashed? 	should I have been flashing?
should you have been flashing?
should she have been flashing?
should we have been flashing?
should you have been flashing?
should they have been flashing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
should I not flash?
should you not flash?
should she not flash?
should we not flash?
should you not flash?
should they not flash? 	should I not be flashing?
should you not be flashing?
should she not be flashing?
should we not be flashing?
should you not be flashing?
should they not be flashing? 	should I not have flashed?
should you not have flashed?
should she not have flashed?
should we not have flashed?
should you not have flashed?
should they not have flashed? 	should I not have been flashing?
should you not have been flashing?
should she not have been flashing?
should we not have been flashing?
should you not have been flashing?
should they not have been flashing?