$ perl -MEncode -e '$_="\xc3\x81mbito"; print $_, encode "iso-8859-1", $_' | xxd
0000000: c381 6d62 6974 6fc3 816d 6269 746f       ..mbito..mbito
$ perl -MEncode -e '$_="\xc3\x81mbito"; print $_, decode "iso-8859-1", $_' | xxd
0000000: c381 6d62 6974 6fc3 816d 6269 746f       ..mbito..mbito

$ perl -MEncode -e '$_="\xc1mbito";     print $_, encode "iso-8859-1", $_' | xxd
0000000: c16d 6269 746f c16d 6269 746f            .mbito.mbito
$ perl -MEncode -e '$_="\xc1mbito";     print $_, decode "iso-8859-1", $_' | xxd
0000000: c16d 6269 746f c16d 6269 746f            .mbito.mbito