Sixtenmos or Sixteenmos: How To spell?
The word Sixtenmos is misspelled against Sixteenmos, which is plural of "Sixteenmo"
Sixteenmos has double "ee" is mispronounced as "e"Remember double 'EE' in between the strings Sixt & nmos which should not be misspelled with single 'E'
Wrong Spelling:  Sixt-e-nmos  Correct Spelling:  Sixt-ee-nmos 
Find more incorrect spellings of Sixteenmos to spell right way.