A frustration can be protracted.Logical formLearned from2 sentences. An exodus can be protracted.Logical formLearned from2 sentences. A (car chase) can be protracted.Logical formLearned from2 sentences. A (border conflict) can be protracted.Logical formLearned from2 sentences. A fever can be protracted.Logical formLearned from2 sentences. Labours can be protracted.Logical formLearned from2 sentences. Cycles can be protracted.Logical formLearned from2 sentences. A flattery can be protracted.Logical formLearned from2 sentences. (Learning curves) can be protracted.Logical formLearned from2 sentences. Sleep can be protracted.Logical formLearned from2 sentences. A cold war can be protracted.Logical formLearned from2 sentences. (Refugee populations) can be protracted.Logical formLearned from2 sentences. A natural history can be protracted.Logical formLearned from2 sentences. An application can be protracted.Logical formLearned from2 sentences. A (copyright battle) can be protracted.Logical formLearned from2 sentences.