痴 疒 + 知 疒 Part nè sick 知 Part zhī know Appears in characters like: 病 疼 痛 疯 瘦 症 症 痕 癖 痒 瘾 疤 瘤 癌 瘀 痴 痣 疗 瘸 痘 痰 瘪 疾 疲