Relationships can be between breathing.Logical formLearned from2 sentences. (Synthetic fibers) may be combined with (breathing equipment).Logical formLearned from2 sentences. An (air breathing apparatus) may be designed during a project.Logical formLearned from2 sentences. A (breathing rate) may double.Logical formLearned from2 sentences. (Breathing problems) can be permanent.Logical formLearned from2 sentences. A male may be puted on a (breathing machine).Logical formLearned from2 sentences. A person may use breathing.Logical formLearned from2 sentences. Centers may control breathing.Logical formLearned from2 sentences. Breathing can be harmless.Logical formLearned from2 sentences. Breathing may be caused.Logical formLearned from2 sentences. A (breathing center) can be in a brain.Logical formLearned from2 sentences. A return can be to normal breathing.Logical formLearned from2 sentences. (Breathing problems) may get worse.Logical formLearned from2 sentences. Breathing can be a bodily function.Logical formLearned from2 sentences. A sufferer may undergo a breathing.Logical formLearned from2 sentences.