B331133131323131133132233133313231333132212113313331333133311212111113212121   >>    B33113313132313113313223313331323133313221211331333133313331121211111321212   <<    B331133131323131133132233133313231333132212113313331333133311212111113212123   >>      B331133131323131133132233133313231333132212113313331333133311212111113212122   >>