AQUEDUCT 12/17

[Pecci]

1:1::4::6::5:
2:4::6::5:
3:2::4::3:
4:7::4::5::8:
5:4::2::5:
6:9::8::7::5:
7:6::4::8::5::3:
8:2:........:4::3:
9:7::8::9: