4 · Society, Civilization, Culture
46 · social and economic life, transport and communication
46C · traffic and transport
46C1 · traffic on land
46C13 · animal mounts; pack-animals
46C131 · riding a horse, ass, or mule; rider, horseman
46C1314 · horses and kindred animals
46C13141 · horse
46C13141(+5) · horse (+ types and use of conveyance)
46C13141(+53) · horse (+ conveyance for transport of loads and cargoes)