function oddOccurrences(input) {

    let result = {}
    let resultWord = ""
    let words = input.split(" ")
        .map(word => word.toLowerCase())
        .forEach(element => {
            if (result[element] == undefined) {
                result[element] = 1
            }
            result[element]++
        });

    for (let word in result) {
        if (result[word] % 2 !== 1) {
            resultWord += `${word} `
            delete result[word]
        }

    }


    console.log(resultWord)

}