def find_best_shifts(wordlist, text):
    find_best_shifts_rec(wordlist, text, 0)
    return list_o_shifts


list_o_shifts = []

def find_best_shifts_rec(wordlist, text, start):
    global list_o_shifts
    just_added = ()
    for shift in range(0, 27):
        s = text[:start] + apply_shift(text[start:], shift)
        print "s:", s
        possible_word = ""
        if " " not in s[start:]:
            possible_word = s[start:]
            if is_word(wordlist, possible_word):
                list_o_shifts = []
                print "decoded word:", possible_word
                list_o_shifts.append((start, shift))
                print list_o_shifts
        for n in range(start, len(s)):
            if s[n] == " ":
                possible_word = s[start:n]
                if is_word(wordlist, possible_word):
                    print "decoded word:", possible_word
                    find_best_shifts_rec(wordlist, s, (n + 1))
                    if len(list_o_shifts) > 0:
                        just_added = list_o_shifts[0]
                        if just_added[0] != start:
                            list_o_shifts.insert(0, (start, shift))
                            print "list of shifts:", list_o_shifts
                    break
                else:
                    break