B331133131323131133132233133313113313231313331323223313133313232212321   >>    B33113313132313113313223313331311331323131333132322331313331323221232   <<    B331133131323131133132233133313113313231313331323223313133313232212323   >>      B331133131323131133132233133313113313231313331323223313133313232212322   >>