Some are called Ã mter ( Lucerne ) , Amtsbezirke ( Bern ) , district ( in French ) or distretto ( Tessin and part of GraubÃ 1\/4 nden ) . They are also termed Ã mter ( Lucerne ) , Amtsbezirke ( Bern ) , district ( in French ) or distretto ( Tessin and part of GraubÃ 1\/4 nden ) .