X, Y, and Z Are Linked Genes

Short Answer

X, Y, and Z are linked genes. Based on testcross data, the frequency of recombination between genes X and Y was determined to be 33.1 map units. Between genes X and Z, the distance was 11.8 mu; between genes Y and Z, the distance was 21.3 mu.
-What is the order of these three genes on the chromosome?