B33113313132313113313223313331323133313223313231333133311221123232213121   >>    B3311331313231311331322331333132313331322331323133313331122112323221312   <<    B33113313132313113313223313331323133313223313231333133311221123232213123   >>      B33113313132313113313223313331323133313223313231333133311221123232213122   >>