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Knock Knocking Knocked To knock
who are you what are you whom do you want who is it
knock on knocking on knocks on to knock on
she had fallen she fall had she fallen did she fall
knocks to knock knocked knocking
did she hear then she heard when she heard than she heard
Who is it Who are you What’s your name the same to you
to knock knocking knocked knock
have listened listened was listening listen
Knocking Knocked Knock To knock
when; knocking when; knock that; knocking that; knock
to have heard to be heard to be hearing having heard
knocked; did was knocking; did knocked; was doing knock; am doing
had I gone；someone knocked at I had gone；did someone knock at had I gone；did someone knock at did I go；someone knocked at
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