B3311331313231311331322331333132313231333133313311211113313331322322122321   >>    B331133131323131133132233133313231323133313331331121111331333132232212232   <<    B3311331313231311331322331333132313231333133313311211113313331322322122323   >>      B3311331313231311331322331333132313231333133313311211113313331322322122322   >>