A (breathing exercise) can be controlled.Logical formLearned from2 sentences. Fluid may block (breathing passages).Logical formLearned from2 sentences. A (breathing pacemaker) can be portable.Logical formLearned from2 sentences. A breathing may be assisted by machines.Logical formLearned from2 sentences. A male may hear a sound of breathing.Logical formLearned from2 sentences. Fresh air may undergo a breathing.Logical formLearned from2 sentences. A breathing can be extended.Logical formLearned from2 sentences. A (breathing rhythm) can be regular.Logical formLearned from2 sentences. Conjunction can be with (breathing techniques).Logical formLearned from2 sentences. A (breathing tube) can be into a mouth.Logical formLearned from2 sentences. Placement of a (breathing tube) can be necessary.Logical formLearned from2 sentences. Exercises may involve breathing.Logical formLearned from2 sentences. Muscles may be required for breathing.Logical formLearned from2 sentences. A (breathing pattern) may deteriorate.Logical formLearned from2 sentences. Respiration can be a pattern of breathing.Logical formLearned from2 sentences.