could fracture
Regular verb: fracture - fractured- fractured

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could fracture
you could fracture
he could fracture
we could fracture
you could fracture
they could fracture 	I could be fracturing
you could be fracturing
he could be fracturing
we could be fracturing
you could be fracturing
they could be fracturing	I could have fractured
you could have fractured
he could have fractured
we could have fractured
you could have fractured
they could have fractured	I could have been fracturing
you could have been fracturing
he could have been fracturing
we could have been fracturing
you could have been fracturing
they could have been fracturing	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I couldn't fracture
you couldn't fracture
he couldn't fracture
we couldn't fracture
you couldn't fracture
they couldn't fracture 	I couldn't be fracturing
you couldn't be fracturing
he couldn't be fracturing
we couldn't be fracturing
you couldn't be fracturing
they couldn't be fracturing	I couldn't have fractured
you couldn't have fractured
he couldn't have fractured
we couldn't have fractured
you couldn't have fractured
they couldn't have fractured	I couldn't have been fracturing
you couldn't have been fracturing
he couldn't have been fracturing
we couldn't have been fracturing
you couldn't have been fracturing
they couldn't have been fracturing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I fracture?
could you fracture?
could he fracture?
could we fracture?
could you fracture?
could they fracture? 	could I be fracturing?
could you be fracturing?
could he be fracturing?
could we be fracturing?
could you be fracturing?
could they be fracturing? 	could I have fractured?
could you have fractured?
could he have fractured?
could we have fractured?
could you have fractured?
could they have fractured? 	could I have been fracturing?
could you have been fracturing?
could he have been fracturing?
could we have been fracturing?
could you have been fracturing?
could they have been fracturing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
couldn't I fracture?
couldn't you fracture?
couldn't he fracture?
couldn't we fracture?
couldn't you fracture?
couldn't they fracture? 	couldn't I be fracturing?
couldn't you be fracturing?
couldn't he be fracturing?
couldn't we be fracturing?
couldn't you be fracturing?
couldn't they be fracturing? 	couldn't I have fractured?
couldn't you have fractured?
couldn't he have fractured?
couldn't we have fractured?
couldn't you have fractured?
couldn't they have fractured? 	couldn't I have been fracturing?
couldn't you have been fracturing?
couldn't he have been fracturing?
couldn't we have been fracturing?
couldn't you have been fracturing?
couldn't they have been fracturing?