$ perl -CS -S unichars Singleton > sample-one
$ iconv -f UTF-8 -t UTF-16 < sample-one > sample-two
$ iconv -f UTF-8 -t UTF-32 < sample-one > sample-three
$ file sample-{one,two,three}
sample-one:   UTF-8 Unicode text
sample-two:   Little-endian UTF-16 Unicode text
sample-three: Unicode text, UTF-32, little-endian