D331311321221323131323331323232132313232233131311331313233313231323221221   >>    D33131132122132313132333132323213231323223313131133131323331323132322122   <<    D331311321221323131323331323232132313232233131311331313233313231323221223   >>      D331311321221323131323331323232132313232233131311331313233313231323221222   >>