B33113313132313113313223313331323133313223313231333133313311231211111231231211   >>    B3311331313231311331322331333132313331322331323133313331331123121111123123121   <<    B33113313132313113313223313331323133313223313231333133313311231211111231231213   >>      B33113313132313113313223313331323133313223313231333133313311231211111231231212   >>