of corse its possible, but look at the work you basically have to go through...

gene 1 x gene 2 =dbl het gene 1 n 2
gene 1 x gene 3 dbl het gene 1 n 3

dbl hets = 1/16 chance for double recessive

gene1/2 x gene 1/3 = gene 1 dbl het gene 2 n 3

gene 1 dbl hets bread together = 1/16 chance for triple recessive

best way I could figure out to do it.