B33113313132313113313223313331323133313223313231333133313311212133313232112121   >>    B3311331313231311331322331333132313331322331323133313331331121213331323211212   <<    B33113313132313113313223313331323133313223313231333133313311212133313232112123   >>      B33113313132313113313223313331323133313223313231333133313311212133313232112122   >>