could quiet
Regular verb: quiet - quieted- quieted

Affirmation 	
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I could quiet
you could quiet
he could quiet
we could quiet
you could quiet
they could quiet 	I could be quieting
you could be quieting
he could be quieting
we could be quieting
you could be quieting
they could be quieting	I could have quieted
you could have quieted
he could have quieted
we could have quieted
you could have quieted
they could have quieted	I could have been quieting
you could have been quieting
he could have been quieting
we could have been quieting
you could have been quieting
they could have been quieting	

Negation 	
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I could not quiet
you could not quiet
he could not quiet
we could not quiet
you could not quiet
they could not quiet 	I could not be quieting
you could not be quieting
he could not be quieting
we could not be quieting
you could not be quieting
they could not be quieting	I could not have quieted
you could not have quieted
he could not have quieted
we could not have quieted
you could not have quieted
they could not have quieted	I could not have been quieting
you could not have been quieting
he could not have been quieting
we could not have been quieting
you could not have been quieting
they could not have been quieting	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I quiet?
could you quiet?
could he quiet?
could we quiet?
could you quiet?
could they quiet? 	could I be quieting?
could you be quieting?
could he be quieting?
could we be quieting?
could you be quieting?
could they be quieting? 	could I have quieted?
could you have quieted?
could he have quieted?
could we have quieted?
could you have quieted?
could they have quieted? 	could I have been quieting?
could you have been quieting?
could he have been quieting?
could we have been quieting?
could you have been quieting?
could they have been quieting? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I not quiet?
could you not quiet?
could he not quiet?
could we not quiet?
could you not quiet?
could they not quiet? 	could I not be quieting?
could you not be quieting?
could he not be quieting?
could we not be quieting?
could you not be quieting?
could they not be quieting? 	could I not have quieted?
could you not have quieted?
could he not have quieted?
could we not have quieted?
could you not have quieted?
could they not have quieted? 	could I not have been quieting?
could you not have been quieting?
could he not have been quieting?
could we not have been quieting?
could you not have been quieting?
could they not have been quieting?