D121213233313223313132322231323132313331323132233132322331313132313221   >>    D12121323331322331313232223132313231333132313223313232233131313231322   <<    D121213233313223313132322231323132313331323132233132322331313132313223   >>      D121213233313223313132322231323132313331323132233132322331313132313222   >>