Apply the appropriate technique for Word Ladder.

1. Analyze the input for Word Ladder.
2. Apply the core algorithm or pattern.
3. Handle edge cases.
4. Return the result.

• Time Complexity: See solution details
• Space Complexity: See solution details

# Solution for Word Ladder
# Implementation depends on specific requirements

def solve():
    # Core implementation here
    pass

# See detailed implementation in the problem description