B331133131323131133132233133313231331123232233131133132313232212321   >>    B33113313132313113313223313331323133112323223313113313231323221232   <<    B331133131323131133132233133313231331123232233131133132313232212323   >>      B331133131323131133132233133313231331123232233131133132313232212322   >>