C1111133313331323223313331333133313331323133313331311331333121111221123121121   >>    C111113331333132322331333133313331333132313331333131133133312111122112312112   <<    C1111133313331323223313331333133313331323133313331311331333121111221123121123   >>      C1111133313331323223313331333133313331323133313331311331333121111221123121122   >>