j17
CuPb PbCu ____ AuSn ____ AgHg TiFe FeTi ____ ____ SnAu ____ 
AgHg TiFe FeTi ____ ____ SnAu ____ CuPb PbCu ____ AuSn ____ 
SnAu ____ CuPb PbCu ____ AuSn ____ AgHg TiFe FeTi ____ ____ 
AuSn ____ AgHg TiFe FeTi ____ ____ SnAu ____ CuPb PbCu ____