B3311331313231311331322331333132313231333133313311211113313331333132211121   >>    B331133131323131133132233133313231323133313331331121111331333133313221112   <<    B3311331313231311331322331333132313231333133313311211113313331333132211123   >>      B3311331313231311331322331333132313231333133313311211113313331333132211122   >>