B3311331313231311331322331333132313233313231333131133131133132233112111121   >>    B331133131323131133132233133313231323331323133313113313113313223311211112   <<    B3311331313231311331322331333132313233313231333131133131133132233112111123   >>      B3311331313231311331322331333132313233313231333131133131133132233112111122   >>