Draw a genetic map for the f1 female x chromosomes

A true breeding wild-type strain of flies was crossed to another strain homozygous for the recessive X-linked mutant alleles m, r, and v. The F1 female offspring were testcrossed to a recessive strain of males. The following offspring were examined

phenotype (allele) # offspring
m+ r+ v+ 648
m r+ v+ 3
m+ r v+ 128
m+ r+ v 13
m r v+ 17
m r+ v 149
m+ r v 2
m r v 640

Draw a genetic map for the F1 female X chromosomes, including the gene order and map distances.