14th century.

By the late 1400s, the choice of spelling between and was usually based on the sound's position in the word rather than etymology: tended to be used in word final position: usz (, ), -nüsz (, ); tended to be used when the sound occurred between vowels: grosses (, ). While Martin Luther's early 16th-century printings also contain spellings such as heyße , early modern printers mostly changed these to : heisse. Around the same time, printers