Classification · Aptitude · VITEEE

Based on the English alphabetical order, three of the following four letter-clusters are alike in a certain way and thus form a group. Which letter-cluster does not belong to that group?

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

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.