B3311331313231311331322331333132313233313231333131133133313223312231   >>    B331133131323131133132233133313231323331323133313113313331322331223   <<    B3311331313231311331322331333132313233313231333131133133313223312233   >>      B3311331313231311331322331333132313233313231333131133133313223312232   >>