C3132121111133313233121111331333133313331333133313331333133313331333112232211   >>    C313212111113331323312111133133313331333133313331333133313331333133311223221   <<    C3132121111133313233121111331333133313331333133313331333133313331333112232213   >>      C3132121111133313233121111331333133313331333133313331333133313331333112232212   >>