function oddOccurrences(input){

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

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

console.log(resultWord)


}