D121213233313223313111323131323133313132322331323231323131323123121   >>    D12121323331322331311132313132313331313232233132323132313132312312   <<    D121213233313223313111323131323133313132322331323231323131323123123   >>      D121213233313223313111323131323133313132322331323231323131323123122   >>