B33113313132313113313223313331323133313223313231333133313232212121133132221211   >>    B3311331313231311331322331333132313331322331323133313331323221212113313222121   <<    B33113313132313113313223313331323133313223313231333133313232212121133132221213   >>      B33113313132313113313223313331323133313223313231333133313232212121133132221212   >>