Axis: self
ElementNode-set
AAA id = a1a1
BBB id = b1b1
BBB id = b2b2
AAA id = a2a2
BBB id = b3b3
BBB id = b4b4
CCC id = c1c1
CCC id = c2c2
BBB id = b5b5
CCC id = c3c3