Those are foreign loanwords, the same exists with St- and Sp-: Spa, Spin, Sputnik, Steak, Stigma, Stewardess You will always end up with some exceptions if yo

Those are foreign loanwords, the same exists with St- and Sp-: Spa, Spin, Sputnik, Steak, Stigma, Stewardess You will always end up with some exceptions if you don't write fully phonetically, which isn't possible because there are differences in pronunciation. p.s.: schk doesn't really exist as sk shifted to sch (which is why the reason we write sch): https://en.wikipedia.org/wiki/High_German_consonant_shift#.2Fs.2F_.3E_.2F.CA.83.2F https://en.wikipedia.org/wiki/High_German_consonant_shift#.2...