C3132121111133313233121111331333133313331333133313331333133313221323131211   >>    C313212111113331323312111133133313331333133313331333133313331322132313121   <<    C3132121111133313233121111331333133313331333133313331333133313221323131213   >>      C3132121111133313233121111331333133313331333133313331333133313221323131212   >>