B3311331313231311331322331333132313233313231333131133131133132233112331211   >>    B331133131323131133132233133313231323331323133313113313113313223311233121   <<    B3311331313231311331322331333132313233313231333131133131133132233112331213   >>      B3311331313231311331322331333132313233313231333131133131133132233112331212   >>