fire is 0, salt is 1.

00000 = Pb-Pb
00001 = Cu-Pb
00010 = Sn-Fe
00011 = Ag-Fe
00100 = Pb-Fe
00101 = Cu-Fe
00110 = Sn-Ag
00111 = Ag-Ag
01000 = Pb-Sn
01001 = Cu-Sn
01010 = Sn-Cu
01011 = Ag-Cu
01100 = Pb-Cu
01101 = Cu-Cu
01110 = Sn-Au
01111 = Ag-Au
10000 = Pb-Ag
10001 = Cu-Ag
10010 = Fe-Pb
10011 = Au-Pb
10100 = Sn-Pb
10101 = Ag-Pb
10110 = Fe-Fe
10111 = Au-Fe
11000 = Pb-Au
11001 = Cu-Au
11010 = Fe-Sn
11011 = Au-Sn
11100 = Sn-Sn
11101 = Ag-Sn
11110 = Fe-Cu
11111 = Au-Cu