def print_character_counts(lst):
    char_count = {}
    result = []
    for char in lst:
        char_count[char] = char_count.get(char, 0) + 1

    for char, count in char_count.items():
        result.append(f"{count}{char}")

    print("".join(result))

# Example usage:
my_list = ['z', 'z', 'z', 'z', 'e', 'e', 'e', 'z', 'z']
print_character_counts(my_list)  # Output: 4z3e2z