D121213233313223313111323131323133313232211233132313321323132313221   >>    D12121323331322331311132313132313331323221123313231332132313231322   <<    D121213233313223313111323131323133313232211233132313321323132313223   >>      D121213233313223313111323131323133313232211233132313321323132313222   >>