could fault
Regular verb: fault - faulted- faulted

Affirmation 	
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I could fault
you could fault
she could fault
we could fault
you could fault
they could fault 	I could be faulting
you could be faulting
she could be faulting
we could be faulting
you could be faulting
they could be faulting	I could have faulted
you could have faulted
she could have faulted
we could have faulted
you could have faulted
they could have faulted	I could have been faulting
you could have been faulting
she could have been faulting
we could have been faulting
you could have been faulting
they could have been faulting	

Negation 	
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I could not fault
you could not fault
she could not fault
we could not fault
you could not fault
they could not fault 	I could not be faulting
you could not be faulting
she could not be faulting
we could not be faulting
you could not be faulting
they could not be faulting	I could not have faulted
you could not have faulted
she could not have faulted
we could not have faulted
you could not have faulted
they could not have faulted	I could not have been faulting
you could not have been faulting
she could not have been faulting
we could not have been faulting
you could not have been faulting
they could not have been faulting	

Interrogative form 	
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could I fault?
could you fault?
could she fault?
could we fault?
could you fault?
could they fault? 	could I be faulting?
could you be faulting?
could she be faulting?
could we be faulting?
could you be faulting?
could they be faulting? 	could I have faulted?
could you have faulted?
could she have faulted?
could we have faulted?
could you have faulted?
could they have faulted? 	could I have been faulting?
could you have been faulting?
could she have been faulting?
could we have been faulting?
could you have been faulting?
could they have been faulting? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I not fault?
could you not fault?
could she not fault?
could we not fault?
could you not fault?
could they not fault? 	could I not be faulting?
could you not be faulting?
could she not be faulting?
could we not be faulting?
could you not be faulting?
could they not be faulting? 	could I not have faulted?
could you not have faulted?
could she not have faulted?
could we not have faulted?
could you not have faulted?
could they not have faulted? 	could I not have been faulting?
could you not have been faulting?
could she not have been faulting?
could we not have been faulting?
could you not have been faulting?
could they not have been faulting?