B331133131323131133132233133313231313231333132322331323132313232211212321   >>    B33113313132313113313223313331323131323133313232233132313231323221121232   <<    B331133131323131133132233133313231313231333132322331323132313232211212323   >>      B331133131323131133132233133313231313231333132322331323132313232211212322   >>