B3311331313231311331322331333132322331313231211113313331333112121   >>    B331133131323131133132233133313232233131323121111331333133311212   <<    B3311331313231311331322331333132322331313231211113313331333112123   >>      B3311331313231311331322331333132322331313231211113313331333112122   >>