hgs

import sys


def validate_step(step, i):
    if step in ['', '#']:
        print('COMPRESSION FAILED')
        sys.exit()
    else:
        print('STEP {}: {}'.format(i, step))


str_words = input().split()

if len(str_words) <= 0:
    print('COMPRESSION FAILED')
    sys.exit()

# Word Elimination
for i in range(len(str_words)):
    word = str_words[i]
    new_word = ''
    # add all alpha chars (and 12) to new word
    j = 0
    while j < len(word):
        char = word[j]
        if char.isalpha() or char == ' ':
            new_word += char
        else:
            if j+1 < len(word):
                if char == '1' and word[j+1] == '2':
                    new_word += char + word[j+1]
                    j += 1
        j += 1
    str_words[i] = new_word
step = (' '.join(str_words)).strip()
validate_step(step, 1)

# Letter Conversion
for i in range(len(str_words)):
    new_word = ''
    for char in str_words[i]:
        if char.lower() in ['a', 'e', 'i', 'o', 'u']:
            new_word += char.upper()
        else:
            new_word += char.lower()
    str_words[i] = new_word

step = (' '.join(str_words)).strip()
validate_step(step, 2)

# Word Compression
i = 0
while i < len(str_words):
    if str_words[i] == '':
        del str_words[i]
    else:
        if i % 2 == 0:  # odd
            str_words[i] = str_words[i][::2]
        else:  # even
            str_words[i] = str_words[i][len(str_words[i]) // 2:]
        i += 1

step = (' '.join(str_words[::2]) + '#' + ' '.join(str_words[1::2])).strip()
validate_step(step, 3)