B3311331313231311331322331333132313231323331333131133132322331321123231   >>    B331133131323131133132233133313231323132333133313113313232233132112323   <<    B3311331313231311331322331333132313231323331333131133132322331321123233   >>      B3311331313231311331322331333132313231323331333131133132322331321123232   >>