They included gossiping, forming cliques and being vain and arrogant.
The Sun
The pupils in the school form cliques, and every so often they gang up on someone for no good reason, isolating and baiting them with a horrifying level of cruelty.
Times, Sunday Times
Some teams switch riders around so that they do not form cliques.
Times, Sunday Times
But it was found dolphins in one group sometimes formed cliques.
The Sun
Any set of connected simplicial vertices forms a clique.
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