B3311331313231311331322331333132313331322121133133313331323221311212131   >>    B331133131323131133132233133313231333132212113313331333132322131121213   <<    B3311331313231311331322331333132313331322121133133313331323221311212133   >>      B3311331313231311331322331333132313331322121133133313331323221311212132   >>