from collections import Counter
import re


def count_words(sentence):
    pattern = r"[a-zA-ZáčďéíĺľňóôŕšťúýžÁČĎÉÍĹĽŇÓÔŔŠŤÚÝŽ0-9]+(?:'[a-zA-ZáčďéíĺľňóôŕšťúýžÁČĎÉÍĹĽŇÓÔŔŠŤÚÝŽ0-9]+)?"
    clean_sentence = sentence.lower()
    found_words = re.findall(pattern, clean_sentence)
    return dict(Counter(found_words))