should cripple
Regular verb: cripple - crippled- crippled

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I'd cripple
you'd cripple
he'd cripple
we'd cripple
you'd cripple
they'd cripple 	I'd be crippling
you'd be crippling
he'd be crippling
we'd be crippling
you'd be crippling
they'd be crippling	I should've crippled
you should've crippled
he should've crippled
we should've crippled
you should've crippled
they should've crippled	I should've been crippling
you should've been crippling
he should've been crippling
we should've been crippling
you should've been crippling
they should've been crippling	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I shouldn't cripple
you shouldn't cripple
he shouldn't cripple
we shouldn't cripple
you shouldn't cripple
they shouldn't cripple 	I shouldn't be crippling
you shouldn't be crippling
he shouldn't be crippling
we shouldn't be crippling
you shouldn't be crippling
they shouldn't be crippling	I shouldn't have crippled
you shouldn't have crippled
he shouldn't have crippled
we shouldn't have crippled
you shouldn't have crippled
they shouldn't have crippled	I shouldn't have been crippling
you shouldn't have been crippling
he shouldn't have been crippling
we shouldn't have been crippling
you shouldn't have been crippling
they shouldn't have been crippling	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
should I cripple?
should you cripple?
should he cripple?
should we cripple?
should you cripple?
should they cripple? 	should I be crippling?
should you be crippling?
should he be crippling?
should we be crippling?
should you be crippling?
should they be crippling? 	should I have crippled?
should you have crippled?
should he have crippled?
should we have crippled?
should you have crippled?
should they have crippled? 	should I have been crippling?
should you have been crippling?
should he have been crippling?
should we have been crippling?
should you have been crippling?
should they have been crippling? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
shouldn't I cripple?
shouldn't you cripple?
shouldn't he cripple?
shouldn't we cripple?
shouldn't you cripple?
shouldn't they cripple? 	shouldn't I be crippling?
shouldn't you be crippling?
shouldn't he be crippling?
shouldn't we be crippling?
shouldn't you be crippling?
shouldn't they be crippling? 	shouldn't I have crippled?
shouldn't you have crippled?
shouldn't he have crippled?
shouldn't we have crippled?
shouldn't you have crippled?
shouldn't they have crippled? 	shouldn't I have been crippling?
shouldn't you have been crippling?
shouldn't he have been crippling?
shouldn't we have been crippling?
shouldn't you have been crippling?
shouldn't they have been crippling?