D12121323331313223313233313131323133313233313132333132322331123221   >>    D1212132333131322331323331313132313331323331313233313232233112322   <<    D12121323331313223313233313131323133313233313132333132322331123223   >>      D12121323331313223313233313131323133313233313132333132322331123222   >>