C312312111111331312111133133313231333133313121211113313223322131   >>    C31231211111133131211113313331323133313331312121111331322332213   <<    C312312111111331312111133133313231333133313121211113313223322133   >>      C312312111111331312111133133313231333133313121211113313223322132   >>