(
a
b
)
6
=
(
a
b
)
(
a
b
)
(
a
b
)
(
a
b
)
(
a
b
)
(
a
b
)
=
(
a
b
)
(
a
b
)
(
a
b
)
(
a
b
)
(
a
b
)
(
a
b
)
=
(
a
·
a
·
a
·
a
·
a
·
a
)
(
b
·
b
·
b
·
b
·
b
·
b
)
=
a
6
b
6
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