D12121323331322331311132313132313233313233313331313232123313231232321   >>    D1212132333132233131113231313231323331323331333131323212331323123232   <<    D12121323331322331311132313132313233313233313331313232123313231232323   >>      D12121323331322331311132313132313233313233313331313232123313231232322   >>