C313212111133131211331333133313331311331333131133133313223313112331333112312121   >>    C31321211113313121133133313331333131133133313113313331322331311233133311231212   <<    C313212111133131211331333133313331311331333131133133313223313112331333112312123   >>      C313212111133131211331333133313331311331333131133133313223313112331333112312122   >>