C3123121111331311213331333131133133313331333133313331331123232221211   >>    C312312111133131121333133313113313331333133313331333133112323222121   <<    C3123121111331311213331333131133133313331333133313331331123232221213   >>      C3123121111331311213331333131133133313331333133313331331123232221212   >>