B33113313132313113313223313331323133313221211331333133313112113313231322121   >>    B3311331313231311331322331333132313331322121133133313331311211331323132212   <<    B33113313132313113313223313331323133313221211331333133313112113313231322123   >>      B33113313132313113313223313331323133313221211331333133313112113313231322122   >>