C1111233133313231133133313331333133311221123121111331311331322331221   >>    C111123313331323113313331333133313331122112312111133131133132233122   <<    C1111233133313231133133313331333133311221123121111331311331322331223   >>      C1111233133313231133133313331333133311221123121111331311331322331222   >>