D121213233313223313132322231323132313331323132233132322331322121   >>    D12121323331322331313232223132313231333132313223313232233132212   <<    D121213233313223313132322231323132313331323132233132322331322123   >>      D121213233313223313132322231323132313331323132233132322331322122   >>