Changes can be difficult.Logical formLearned from114 sentences. A language can be difficult.Logical formLearned from114 sentences. A latter can be difficult.Logical formLearned from113 sentences. A disease can be difficult.Logical formLearned from113 sentences. Jumps can be difficult.Logical formLearned from112 sentences. A territory can be difficult.Logical formLearned from112 sentences. A decision can be difficult.Logical formLearned from112 sentences. Languages can be difficult.Logical formLearned from112 sentences. Predictions can be difficult.Logical formLearned from112 sentences. Coordination can be difficult.Logical formLearned from111 sentences. A male may find difficult.Logical formLearned from111 sentences. A goal can be difficult.Logical formLearned from111 sentences. Operations can be difficult.Logical formLearned from111 sentences. Skills can be difficult.Logical formLearned from110 sentences. Items can be difficult.Logical formLearned from109 sentences.