B3311331313231311331322331333132313113313131133133313232233131133132231231   >>    B331133131323131133132233133313231311331313113313331323223313113313223123   <<    B3311331313231311331322331333132313113313131133133313232233131133132231233   >>      B3311331313231311331322331333132313113313131133133313232233131133132231232   >>