शब्दों के बीच सामान्य संबंध के आधार पर उस शब्द-युग्म का चयन कीजिए जो समूह से संबंधित नहीं है।

Four letter-clusters have been given, out of which three are alike in some manner and one is different. Select the letter-cluster that is different.

Find the odd one out among the following items:

Based on the alphabetical order, three of the following four are alike in a certain way and thus form a group. Which is the one that does not belong to that group? (Note: The odd man out is not based on the number of consonants/vowels or their position in the letter cluster.)