a-a a-c aaa aac aae aaf aaj ac- aca acc ace acf acj aea aec aee aef aej af- afa afc afe aff afj aja ajc aje ajf ajj c-- c-j caa cac cae caf caj cca ccc cce ccf ccj ce- cea cec cee cef cej cfa cfc cfe cff cja cjc cjf eaa eac eae eaf eaj ec- eca ecc ece ecf ecj eea eec eee eef ef- efa efc efe eff eja ejc ejf faa fac fae faf faj fca fcc fce fcf fcj fea fec fee fef ffa ffc ffe fff fja fjc jaa jac jae jaf jaj jca jcc jce jcf jea jec jee jef jej jfa jfc jfe jff jfj jja jjc jjf jjj