object WordCount {

    fun phrase(phrase: String): Map<String, Int> {
        val withoutPunctuation = phrase.toLowerCase().replace(Regex("[^\\w']"), " ").trim()
        val words = withoutPunctuation.split(Regex("\\s+"))
        val groupedWords = words.groupBy({ w -> w })

        return groupedWords.mapValues({ it.value.size })
    }

}