D1212111111222331322331313331311213231323133313232212323132233131   >>    D121211111122233132233131333131121323132313331323221232313223313   <<    D1212111111222331322331313331311213231323133313232212323132233133   >>      D1212111111222331322331313331311213231323133313232212323132233132   >>