B33113313132313113313223313331323133313223313231333133313311221133133311231221   >>    B3311331313231311331322331333132313331322331323133313331331122113313331123122   <<    B33113313132313113313223313331323133313223313231333133313311221133133311231223   >>      B33113313132313113313223313331323133313223313231333133313311221133133311231222   >>