D3313223323213233313232233132311211331323133313331323132313123231221   >>    D331322332321323331323223313231121133132313331333132313231312323122   <<    D3313223323213233313232233132311211331323133313331323132313123231223   >>      D3313223323213233313232233132311211331323133313331323132313123231222   >>