C3123223313331322121111331333133313121111331323133313121133133313231   >>    C312322331333132212111133133313331312111133132313331312113313331323   <<    C3123223313331322121111331333133313121111331323133313121133133313233   >>      C3123223313331322121111331333133313121111331323133313121133133313232   >>