BECK, Judge:
This is an appeal by the heirs-at-law of the late Kathryn B. Orstein challenging the trial court's construction of decedent's last will and testament. At issue is whether under the terms of the will decedent's estate passed to a relative of her ex-husband.
The relevant facts are not in dispute. Kathryn B. Orstein married W. Lee Orstein in 1966. On August 30, 1978, she executed a will which reads in part as follows:
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