निम्नलिखित चार विकल्पों में से तीन एक निश्चित तरीके से समान हैं और इसलिए एक समूह बनाते हैं। वह कौन सा है जो उस समूह से संबंधित नहीं है?

Based on the English alphabetical order, three of the following four letter-cluster pairs 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)

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