B3311331313231311331322331333132333133313231332113313331333133313231333112121   >>    B331133131323131133132233133313233313331323133211331333133313331323133311212   <<    B3311331313231311331322331333132333133313231332113313331333133313231333112123   >>      B3311331313231311331322331333132333133313231332113313331333133313231333112122   >>