B3311331313231311331322331333132333133313231332113313331333132233132221   >>    B331133131323131133132233133313233313331323133211331333133313223313222   <<    B3311331313231311331322331333132333133313231332113313331333132233132223   >>      B3311331313231311331322331333132333133313231332113313331333132233132222   >>