पहचाने गए पैटर्न के आधार पर दी गई श्रृंखला में विषम शब्द ज्ञात कीजिए: चंद्रमा, बृहस्पति, शनि, अरुण (यूरेनस)

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 one out is not based on the number of consonants/vowels or their position in the letter cluster)

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 one out is not based on the number of consonants/vowels or their position in the letter-cluster.)