1 ) ( a a ) ∗ ( b b ) ∗ + ∗ ( b b ) ∗ ( a a ) {\displaystyle 1)(aa)*(bb)*+*(bb)*(aa)}
2 ) a ∗ ( b b b ) a a ∗ ( a a a ) + b ∗ ( b b b ) ∗ ( a a a ) + b ∗ ( b b b ) a ∗ ( a a a ) {\displaystyle 2)a*(bbb)aa*(aaa)+b*(bbb)*(aaa)+b*(bbb)a*(aaa)}
3 ) ∗ ( b b b ) ∗ ( a a a ) + ∗ ( b b b ) b b ∗ ( a a a ) a + ∗ ( b b b ) b ∗ ( a a a ) a a + ∗ ( b b b ) ∗ ( a a a ) a a + ∗ ( b b b ) ∗ ( a a a ) a + ∗ ( b b b ) b ∗ ( a a a ) {\displaystyle 3)*(bbb)*(aaa)+*(bbb)bb*(aaa)a+*(bbb)b*(aaa)aa+*(bbb)*(aaa)aa+*(bbb)*(aaa)a+*(bbb)b*(aaa)}
4 ) ∗ ( b b ) ∗ ( a a ) a + ∗ ( b b ) ∗ ( a a ) a + ∗ ( b b ) ∗ ( a a ) {\displaystyle 4)*(bb)*(aa)a+*(bb)*(aa)a+*(bb)*(aa)}