B3311331313231311331322331333132313331323223312113313331333133313112211231231   >>    B331133131323131133132233133313231333132322331211331333133313331311221123123   <<    B3311331313231311331322331333132313331323223312113313331333133313112211231233   >>      B3311331313231311331322331333132313331323223312113313331333133313112211231232   >>