Styinbock or Steinbock: How To spell?

The word Styinbock is misspelled against Steinbock, a noun meaning "A small South African antelope (Nanotragus tragulus) which frequents dry, rocky districts; -- called also steenbok."

Word contains consecutive vowels 'EI' in between alphabets st & nbock is misspelled as 'YI'
Wrong Spelling:  st-yi-nbock 
Correct Spelling:  st-ei-nbock 
Find more incorrect spellings of Steinbock to spell right way.