B3311331313231311331322331333131133133313111333133313331322121111133311121   >>    B331133131323131133132233133313113313331311133313331333132212111113331112   <<    B3311331313231311331322331333131133133313111333133313331322121111133311123   >>      B3311331313231311331322331333131133133313111333133313331322121111133311122   >>