B3311331313231311331322331333132333133313231332113313331333133313132211213221   >>    B331133131323131133132233133313233313331323133211331333133313331313221121322   <<    B3311331313231311331322331333132333133313231332113313331333133313132211213223   >>      B3311331313231311331322331333132333133313231332113313331333133313132211213222   >>