C3123223313331322121111331333133313121111331323133313232233313211   >>    C312322331333132212111133133313331312111133132313331323223331321   <<    C3123223313331322121111331333133313121111331323133313232233313213   >>      C3123223313331322121111331333133313121111331323133313232233313212   >>