B331133131323131133132233133313231323223313231313331333132313311232212121   >>    B33113313132313113313223313331323132322331323131333133313231331123221212   <<    B331133131323131133132233133313231323223313231313331333132313311232212123   >>      B331133131323131133132233133313231323223313231313331333132313311232212122   >>