brahmacarinam
brahmacāriṇām — of brahmacārīs;
SB 6.7.28
brahmacāriṇam — having accepted the life of a brahmacārī perpetually (naiṣṭhika);
SB 9.4.1
brahmacāriṇām — among brahmacārīs;
SB 11.16.25