D331322332321323331323223313231121133132313331333132313232212121   >>    D33132233232132333132322331323112113313231333133313231323221212   <<    D331322332321323331323223313231121133132313331333132313232212123   >>      D331322332321323331323223313231121133132313331333132313232212122   >>