C11112331312111112111133133313331323132313232233133313113313332112312321   >>    C1111233131211111211113313331333132313231323223313331311331333211231232   <<    C11112331312111112111133133313331323132313232233133313113313332112312323   >>      C11112331312111112111133133313331323132313232233133313113313332112312322   >>