B331133131323131133132233133313231333132212113313331333133313311232223311   >>    B33113313132313113313223313331323133313221211331333133313331331123222331   <<    B331133131323131133132233133313231333132212113313331333133313311232223313   >>      B331133131323131133132233133313231333132212113313331333133313311232223312   >>