B331133131323131133132233133313223313113313223313331323133313221311212121   >>    B33113313132313113313223313331322331311331322331333132313331322131121212   <<    B331133131323131133132233133313223313113313223313331323133313221311212123   >>      B331133131323131133132233133313223313113313223313331323133313221311212122   >>