B3311331313231311331322331333132313331322121133133313331333132233112113121   >>    B331133131323131133132233133313231333132212113313331333133313223311211312   <<    B3311331313231311331322331333132313331322121133133313331333132233112113123   >>      B3311331313231311331322331333132313331322121133133313331333132233112113122   >>