could cripple
Regular verb: cripple - crippled- crippled

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could cripple
you could cripple
he could cripple
we could cripple
you could cripple
they could cripple 	I could be crippling
you could be crippling
he could be crippling
we could be crippling
you could be crippling
they could be crippling	I could have crippled
you could have crippled
he could have crippled
we could have crippled
you could have crippled
they could have crippled	I could have been crippling
you could have been crippling
he could have been crippling
we could have been crippling
you could have been crippling
they could have been crippling	

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

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

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