D33132213132132313231323223313131323133313223313232223213231221   >>    D3313221313213231323132322331313132313331322331323222321323122   <<    D33132213132132313231323223313131323133313223313232223213231223   >>      D33132213132132313231323223313131323133313223313232223213231222   >>