B3311331313231311331322331333131133133313231133133313331322132323321   >>    B331133131323131133132233133313113313331323113313331333132213232332   <<    B3311331313231311331322331333131133133313231133133313331322132323323   >>      B3311331313231311331322331333131133133313231133133313331322132323322   >>