a-a a-b a-c aaa aab aac aae aaj ab- aba abb abc abe abj ac- aca acb acc ace acj aea aeb aec aee aej aja ajb ajc aje ajj baa bab bac bae baj bba bbb bbc bbe bca bcb bcc bce bcj be- bea beb bec bee bja bjc bjj c-- c-j caa cab cac cae caj cba cbb cbc cbe cbj cca ccb ccc cce ccj ce- cea ceb cec cee cej cja cjb cjc eaa eab eac eae eaj eba ebb ebc ebe ebj ec- eca ecb ecc ece ecj eea eeb eec eee eja ejc jaa jab jac jae jaj jba jbc jbj jca jcb jcc jce jea jeb jec jee jej jja jjb jjc jjj