B331133131323131133132233133313223313113313223313331323133313221211111212331   >>    B33113313132313113313223313331322331311331322331333132313331322121111121233   <<    B331133131323131133132233133313223313113313223313331323133313221211111212333   >>      B331133131323131133132233133313223313113313223313331323133313221211111212332   >>