A duration may pertain-to a separation.Logical formLearned from7 sentences. A separation can be between a (fertility treatment).Logical formLearned from7 sentences. A separation can be between aircrafts.Logical formLearned from7 sentences. Cause can be for separation.Logical formLearned from7 sentences. A separation can be between research.Logical formLearned from7 sentences. A feet may undergo a separation.Logical formLearned from7 sentences. An increase can be in separations.Logical formLearned from7 sentences. Juveniles may undergo a separation.Logical formLearned from7 sentences. A (separation efficiency) can be high.Logical formLearned from7 sentences. Identity may undergo a separation.Logical formLearned from7 sentences. A separation can be profound.Logical formLearned from7 sentences. A separation can be from a friend.Logical formLearned from7 sentences. Markets may undergo a separation.Logical formLearned from7 sentences. A city may undergo a separation.Logical formLearned from7 sentences. Substances may undergo a separation.Logical formLearned from7 sentences.