哼 ⇒
哼 hēng, to groan/to snort/to hum/to croon/humph!
哼哼 哼唱 hēngchàng, to hum/to croon
哼哼哈哈 哼唧 hēngji, whisper
气哼哼 qìhēnghēng, [氣哼哼], enraged/furious/livid
哧 ⇒
哧 chī, (onom.) giggling/breathing/tearing of paper, ripping of fabric etc
吭哧 kēngchi, to puff and blow/to whimper
扑哧 呼哧 hūchī, (onom.) sound of panting