Costs can be subtle.Logical formLearned from19 sentences. A mockery can be subtle.Logical formLearned from19 sentences. Correlations can be subtle.Logical formLearned from19 sentences. A joy can be subtle.Logical formLearned from19 sentences. A love can be subtle.Logical formLearned from19 sentences. A serpent can be subtle.Logical formLearned from19 sentences. An explanation can be subtle.Logical formLearned from19 sentences. A sexuality can be subtle.Logical formLearned from19 sentences. Genetic changes can be subtle.Logical formLearned from19 sentences. Music can be subtle.Logical formLearned from19 sentences. A delicacy can be subtle.Logical formLearned from19 sentences. Taste can be subtle.Logical formLearned from19 sentences. Cultural differences can be subtle.Logical formLearned from19 sentences. A story can be subtle.Logical formLearned from19 sentences. An (energy field) can be subtle.Logical formLearned from19 sentences.