A (stone problem) can be painful.Logical formLearned from16 sentences. An answer can be painful.Logical formLearned from16 sentences. Skin can be painful.Logical formLearned from16 sentences. Side effects can be painful.Logical formLearned from16 sentences. A symptom can be painful.Logical formLearned from16 sentences. Changes can be painful.Logical formLearned from16 sentences. A day can be painful.Logical formLearned from16 sentences. A remembrance can be painful.Logical formLearned from16 sentences. Dyings can be painful.Logical formLearned from16 sentences. Tortures can be painful.Logical formLearned from16 sentences. A rush can be painful.Logical formLearned from16 sentences. Pain can be painful.Logical formLearned from16 sentences. Activities can be painful.Logical formLearned from16 sentences. A crack can be painful.Logical formLearned from16 sentences. Typing can be painful.Logical formLearned from16 sentences.