abet_1c

import sys

string = input()
if len(string) == 0:
    print('COMPRESSION FAILED')
    sys.exit()

# step1 = []
step1 = ''
# for word in string.split(' '):  // I recommend you don't split the string immediately
for i in range(len(string)):  # For each character in string
    # if '12' in word:
    #     twelve = ''
    #     f = word.find('12')
    #     twelve += (list(word).pop(f) + list(word).pop(f+1))
    #     step1.append(twelve)
    # The instructions state that you should just include the string '12' and all alpha characters
    if string[i].isalpha():
        step1 += string[i]  # add character to step1 if it's alphanumeric
    else:
        if 0 < i - 1 < i + 1 < len(string):  # if it isn't the end or beginning of the string
                                             # also prevents IndexError from occuring
            # if it's the substring '12'
            if string[i] == '1' and string[i + 1] == '2': # current string is '1', next string is '2'
                step1 += string[i]
            elif string[i] == '2' and string[i - 1] == '1':  # current string is '2', prev string is '1'
                step1 += string[i]

    # else:
    #     alpha = ''
    #     for c in word:
    #         if c.isalpha():
    #             alpha += c
    #     if len(alpha) > 0:
    #         step1.append(alpha)

if len(step1) == 0:
    print('COMPRESSION FAILED')
    sys.exit()
print('STEP 1: ',' '.join(step1), sep='')

# step1 = ' '.join(step1)  # since step1 is a string
step2 = ''
for char in step1:
    # if char.isalpha():  # you can lowercase numbers, don't worry
        # if char in 'aeiouAEIOU':
        if char.lower() in 'aeiou':  # more efficient
            step2 += char.upper()
        else:
            step2 += char.lower()
    # else:
        # step2 += char
print('STEP 2: ', step2, sep='')

# step3a = []
# step3b = []
# Stick to proper naming conventions
odd_words = []
even_words = []
step2 = step2.split(' ')
# for word in step2:
for i in range(len(step2)):  # easier
    # if step2.index(word) % 2 == 0:
    word = step2[i]
    if i % 2 == 0:
        oddw = ''
        # for c in list(word):
        for j in range(len(word)):
            # if list(word).index(c) % 2 == 0:
            if j % 2 == 0:
                # oddw += c
                oddw += word[j]
        # step3a.append(oddw)
        odd_words.append(oddw)
    else:
        # step3b.append(word[len(word)//2:])
        even_words.append(word[len(word)//2:])

# print('STEP 3: ', ' '.join(step3a), '#', ' '.join(step3b), sep='')
print('STEP 3: {}#{}'.format(' '.join(odd_words), ' '.join(even_words)))