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Across the world, Sivecz (Sivecz ) is an extremely rare unknown gender first name. Much more frequently, Sivecz is the last name as well as the forename.
Сивец
Mark, Christine, Rebeccah, Kimberly, William, Marlene, Edward, Daniel, Philip, Irene, Joann, James, Janet, David, Becca, Eric, John, Alan, Cassandra, and Elizabeth