D121213233313223313132322231323132313331323132233132322123232321   >>    D12121323331322331313232223132313231333132313223313232212323232   <<    D121213233313223313132322231323132313331323132233132322123232323   >>      D121213233313223313132322231323132313331323132233132322123232322   >>