def main():
    s = input()
    i = 0
    result = ''

    while i < len(s):
        skip = 0
        if s[i] == 'l' and i <= len(s) - 3:
            j = i + 1
            while j < len(s) and s[j] == 'o':
                j += 1
            if s[j:j + 1] == 'l' and j > i + 1:
                skip = j - i + 1
        elif s[i] == 'k' and i <= len(s) - 3:
            j = i + 1
            while j < len(s) and s[j] == 'e':
                j += 1
            if s[j:j + 1] == 'k' and j > i + 1:
                skip = j - i + 1

        if skip > 0:
            i += skip
        else:
            result += s[i]
            i += 1

    print(result)


if __name__ == "__main__":
    main()