B3311331313231311331322331333132313231333133313311211113313331333132232111221   >>    B331133131323131133132233133313231323133313331331121111331333133313223211122   <<    B3311331313231311331322331333132313231333133313311211113313331333132232111223   >>      B3311331313231311331322331333132313231333133313311211113313331333132232111222   >>