/-{-{yóuchuōr}-}-/, /-{-{yóuchuō}-}-/, /i̯u²³⁻³³ t͡sʰɔk̚³²/, /i̯u²⁴⁻²² t͡sʰɔk̚³²/, /i̯u²⁴⁻²² t͡sʰɔk̚⁵/, /i̯u²⁴⁻¹¹ t͡sʰɔk̚³²/, /i̯u¹³⁻²² t͡sʰɔk̚³²/, /jɐu̯²¹ t͡sʰœːk̚³/, /jɐu̯²¹ t͡sʰɔːp̚⁵/, /jau4 coek3 / jau4 cop1/, /jau4 tsoek8 / jau4 tsop7/, /youchuo/, /youchuol/, /yóuchuo/, /yóuchuor/、/ㄧㄡˊ ㄔㄨㄛ/、/ㄧㄡˊ ㄔㄨㄛㄦ/
郵局在郵件上加蓋的標記，通常含有收發日期及地點等