B3311331313231311331322331333131133133313233213231333132313231333132212111   >>    B331133131323131133132233133313113313331323321323133313231323133313221211   <<    B3311331313231311331322331333131133133313233213231333132313231333132212113   >>      B3311331313231311331322331333131133133313233213231333132313231333132212112   >>