def isLegal(chr):
    return ('A' <= chr <= 'Z') or ('a' <= chr <= 'z') or chr == "'"

def splitToWords(text):
    word_list = list()
    word = ""
    for chr in text:
        # add chr to current word if legal chr
        if isLegal(chr):
            word += chr
            continue
        # if not legal char, and word is not "", then add to word_list
        if word:
            word_list.append(word.lstrip("'"))
        word = ""
    # don't forget the last word (only happens if last chr is legal)
    if word:
        word_list.append(word.lstrip("'"))

    return word_list

def filter(word_list): # 4 different kind of filterring
    # ususal filter if a character is uppercase
    for words in word_list:
        for i in words:
            if i.isupper():
                word_list.remove(words)
                break
            break
    # filter with string indexing if a character is uppercase
    for words in word_list:
        for i in range(len(words)):
            if words[i].isupper():
                word_list.remove(words)
                break
            break
    # if the the 1st letter is not uppercase
    for words in word_list:
        if len(words) > 0:
            if words[len(words)-1].isupper():
                word_list.remove(words)
        # if the word is is empty
        else:
            word_list.remove(words)

    return word_list

def main():
    filename = "/home/zulkifl/Desktop/ahamed/New Folder/h_7_starting/alice.txt"
    text = open(filename, 'r').read()

    word_list = splitToWords(text)
    word_list = filter(word_list)
    word_list = filter(word_list)
    word_list = filter(word_list) # filtering multiple times for the equracy

    # word_list3 = filter2(word_list2)
    word_list = sorted(word_list)
    counts = len(word_list)
    for words in word_list:
        print(words)
    print(counts)

if __name__ == '__main__':
    main()