The earliest attempt to write the language in the Latin script was undertaken by Baptist missionary William Dean in his 1841 publication First Lessons in the Tie-chiw Dialect published in Bangkok, Thailand[1]; however, his tonal system was said to be incomplete.
[2] The first complete orthographic system was devised by John Campbell Gibson and William Duffus, two Presbyterianism missionaries, in 1875.
The orthography was generally based on the Pe̍h-ōe-jī system, another work of presbyterian origin devised for the Amoy dialect.
The rhymes used in the orthography are listed below:[7][8] The latin alphabet sets in the table represent the spelling of syllable final in the system with its pronunciation in IPA, followed by the example of Chinese word and its translation in Teochew romanization.
However, these codas are still present among native speakers particularly in few border townships like Fenghuang (鳳凰), Sanrao (三饒), and Nan'ao.