Write a Python code that takes as input: An incomplete seed phrase with some missing words The first address of the seed phrase The code should output the complete seed phrase by filling in the missing words so that it is compatible with the address.

To solve this problem, we need to create a Python script that can take an incomplete seed phrase and fill in the missing words to generate a complete seed phrase that corresponds to a specific address. This typically involves working with the BIP39 standard for generating mnemonic phrases in cryptocurrency applications.

For this task, we will:

1. Use the `mnemonic` library for handling BIP39 mnemonic phrases.
2. Implement a solution that fills in missing words by verifying the generated address from the completed seed phrase.

First, you'll need to install the `mnemonic` and `bip32utils` libraries if you haven't already:

```bash
pip install mnemonic bip32utils
```

Next, here's the code that accomplishes the task:

```python
from mnemonic import Mnemonic
import bip32utils
import hashlib

def generate_address_from_mnemonic(mnemonic_phrase):
    seed = Mnemonic.to_seed(mnemonic_phrase)
    # Using BIP32 to derive the first address (assuming a default derivation path m/44'/0'/0'/0/0 for a Bitcoin address)
    root = bip32utils.BIP32Key.fromEntropy(seed)
    child = root.ChildKey(0).ChildKey(0).ChildKey(0)
    return child.Address()  # return the address

def find_complete_seed_phrase(incomplete_phrase, target_address):
    mnemo = Mnemonic("english")
    word_list = mnemo.wordlist
    incomplete_words = incomplete_phrase.split()
    
    missing_count = incomplete_words.count('...')
    
    if missing_count == 0:
        # If there are no missing words, check if the given phrase matches
        if generate_address_from_mnemonic(incomplete_phrase) == target_address:
            return incomplete_phrase
        else:
            return None
  
    # Iterate over all possible combinations of missing words
    from itertools import product
    
    missing_indices = [i for i, word in enumerate(incomplete_words) if word == '...']
    
    for replacement_words in product(word_list, repeat=missing_count):
        phrase_candidate = list(incomplete_words)
        for index, word in zip(missing_indices, replacement_words):
            phrase_candidate[index] = word
        
        complete_phrase = ' '.join(phrase_candidate)
        
        if generate_address_from_mnemonic(complete_phrase) == target_address:
            return complete_phrase
    
    return None

# Example usage
incomplete_seed = "apple banana cherry ..."
target_address = "your_target_address_here"

complete_seed = find_complete_seed_phrase(incomplete_seed, target_address)
if complete_seed:
    print("Complete Seed Phrase:", complete_seed)
else:
    print("No valid complete seed phrase found.")
```

### Instructions to Use the Code:
1. Replace `"..."` in your incomplete seed phrase with the word that is missing.
2. Replace `"your_target_address_here"` with the actual address you're trying to match.
3. Run the script.

### Important Note:
- This approach performs a brute-force search for missing words, which may take considerable time depending on the number of missing words and the size of the word list.
- Ensure that you have the legal right to create and search such seed phrases and addresses.

This code only works for English BIP39 phrases; however, modifications can be made to accommodate phrases in other languages if they are included in the `mnemonic` library.