B3311331313231311331322331333131133133313231133133313113313132211   >>    B331133131323131133132233133313113313331323113313331311331313221   <<    B3311331313231311331322331333131133133313231133133313113313132213   >>      B3311331313231311331322331333131133133313231133133313113313132212   >>