B3311331313231311331322331333132313233313231333131333133313231323223312231   >>    B331133131323131133132233133313231323331323133313133313331323132322331223   <<    B3311331313231311331322331333132313233313231333131333133313231323223312233   >>      B3311331313231311331322331333132313233313231333131333133313231323223312232   >>