B331133131323131133132233133313231333132233132313331331123123313232212111   >>    B33113313132313113313223313331323133313223313231333133112312331323221211   <<    B331133131323131133132233133313231333132233132313331331123123313232212113   >>      B331133131323131133132233133313231333132233132313331331123123313232212112   >>