C3132121111133313233121111331333133313331312121111331211113313232323213131   >>    C313212111113331323312111133133313331333131212111133121111331323232321313   <<    C3132121111133313233121111331333133313331312121111331211113313232323213133   >>      C3132121111133313233121111331333133313331312121111331211113313232323213132   >>