Kohath’s sons: Amram, Izhar, Hebron, and Uzziel.

Amram’s children: Aaron, Moses, and Miriam.
Aaron’s sons: Nadab, Abihu, Eleazar, and Ithamar.

Kohath’s sons: Amram, Izhar, Hebron and Uzziel.

Kohath’s sons: Amram, Izhar, Hebron, and Uzziel—four.

Amram’s sons: Aaron and Moses.

Aaron, along with his descendants, was set apart forever to consecrate the most holy things, to burn incense in the presence of Yahweh, to minister to Him, and to pronounce blessings in His name forever.

As for the rest of Levi’s sons:
from Amram’s sons: Shubael;
from Shubael’s sons: Jehdeiah.