Test link(s): [text-combine-upright:all](https://w3c.github.io/i18n-tests/exploratory/vertical_text/int-vertical-text?text=%3Cspan%3EW3C%3C%2Fspan%3E%E4%BC%9A%E8%AD%B0%E3%81%AF%3Cspan%3E2016%3C%2Fspan%3E%E5%B9%B4%3Cspan%3E12%3C%2Fspan%3E%E6%9C%88%3Cspan%3E5%3C%2Fspan%3E%E6%97%A5%E3%81%A7%E3%81%99%E3%80%82%3Cspan%3E234%3C%2Fspan%3E%E6%97%A5%E7%9B%AE%E3%81%A7%E3%81%99%E3%80%82&lang=ja&fontSize=36&height=500&writingMode=vertical-rl&textOrientation=mixed&textCombineUpright=all&a=text-combine-upright%3Aall%20will%20make%20up%20to%204%20characters%20run%20horizontally%20in%20vertical%20text%2C%20and%20not%20exceed%20the%20line%20width.&i=Test%20passes%20if%20W3C%2C%20and%20the%20numbers%205%2C%2012%2C%20234%2C%20and%202016%20are%20all%20upright.) Results: - **Gecko**: ✅ _Browser: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:94.0) Gecko/20100101 Firefox/94.0_ - **Blink**: ✅ _Browser: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/95.0.4638.69 Safari/537.36_ - **Webkit**: ✅ _Browser: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/16.5.2 Safari/605.1.15_ Related tests: [Vertical text](https://www.w3.org/International/i18n-tests/results/int-vertical-text)