B3311331313231311331322331333132313233313231333131333133313231321323221   >>    B331133131323131133132233133313231323331323133313133313331323132132322   <<    B3311331313231311331322331333132313233313231333131333133313231321323223   >>      B3311331313231311331322331333132313233313231333131333133313231321323222   >>