should backflip
Regular verb: backflip - backfliped- backfliped

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I'd backflip
you'd backflip
he'd backflip
we'd backflip
you'd backflip
they'd backflip 	I'd be backfliping
you'd be backfliping
he'd be backfliping
we'd be backfliping
you'd be backfliping
they'd be backfliping	I should've backfliped
you should've backfliped
he should've backfliped
we should've backfliped
you should've backfliped
they should've backfliped	I should've been backfliping
you should've been backfliping
he should've been backfliping
we should've been backfliping
you should've been backfliping
they should've been backfliping	

Negation 	
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I shouldn't backflip
you shouldn't backflip
he shouldn't backflip
we shouldn't backflip
you shouldn't backflip
they shouldn't backflip 	I shouldn't be backfliping
you shouldn't be backfliping
he shouldn't be backfliping
we shouldn't be backfliping
you shouldn't be backfliping
they shouldn't be backfliping	I shouldn't have backfliped
you shouldn't have backfliped
he shouldn't have backfliped
we shouldn't have backfliped
you shouldn't have backfliped
they shouldn't have backfliped	I shouldn't have been backfliping
you shouldn't have been backfliping
he shouldn't have been backfliping
we shouldn't have been backfliping
you shouldn't have been backfliping
they shouldn't have been backfliping	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
should I backflip?
should you backflip?
should he backflip?
should we backflip?
should you backflip?
should they backflip? 	should I be backfliping?
should you be backfliping?
should he be backfliping?
should we be backfliping?
should you be backfliping?
should they be backfliping? 	should I have backfliped?
should you have backfliped?
should he have backfliped?
should we have backfliped?
should you have backfliped?
should they have backfliped? 	should I have been backfliping?
should you have been backfliping?
should he have been backfliping?
should we have been backfliping?
should you have been backfliping?
should they have been backfliping? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
shouldn't I backflip?
shouldn't you backflip?
shouldn't he backflip?
shouldn't we backflip?
shouldn't you backflip?
shouldn't they backflip? 	shouldn't I be backfliping?
shouldn't you be backfliping?
shouldn't he be backfliping?
shouldn't we be backfliping?
shouldn't you be backfliping?
shouldn't they be backfliping? 	shouldn't I have backfliped?
shouldn't you have backfliped?
shouldn't he have backfliped?
shouldn't we have backfliped?
shouldn't you have backfliped?
shouldn't they have backfliped? 	shouldn't I have been backfliping?
shouldn't you have been backfliping?
shouldn't he have been backfliping?
shouldn't we have been backfliping?
shouldn't you have been backfliping?
shouldn't they have been backfliping?