cáowǔ
цаoу
цаo2 у3
http://www.chinese-russian.com/zd/ci/36961
cáowù
цаo2 у4
http://www.chinese-russian.com/zd/ci/36963
cǎowū
цаo3 у1
http://www.chinese-russian.com/zd/ci/55233