D121213233313223313132322231323132313331323132233132321123231323121   >>    D12121323331322331313232223132313231333132313223313232112323132312   <<    D121213233313223313132322231323132313331323132233132321123231323123   >>      D121213233313223313132322231323132313331323132233132321123231323122   >>