Holes can be challenging.Logical formLearned from5 sentences. Squares can be challenging.Logical formLearned from5 sentences. A (bike ride) can be challenging.Logical formLearned from5 sentences. A map can be challenging.Logical formLearned from5 sentences. Modes can be challenging.Logical formLearned from5 sentences. Thinkers can be challenging.Logical formLearned from5 sentences. A kid can be challenging.Logical formLearned from5 sentences. (Computer games) can be challenging.Logical formLearned from5 sentences. (Investment climates) can be challenging.Logical formLearned from5 sentences. A right can be challenging.Logical formLearned from5 sentences. An adversary can be challenging.Logical formLearned from5 sentences. Credit can be challenging.Logical formLearned from5 sentences. A ski can be challenging.Logical formLearned from5 sentences. (Word problems) can be challenging.Logical formLearned from5 sentences. Objectives can be challenging.Logical formLearned from5 sentences.