D3313131231211331313331313223313133313233313132322331323331323223313121   >>    D331313123121133131333131322331313331323331313232233132333132322331312   <<    D3313131231211331313331313223313133313233313132322331323331323223313123   >>      D3313131231211331313331313223313133313233313132322331323331323223313122   >>