Some words frequently misspelled by computer scientists

“Some words frequently misspelled by computer scientists:

implement not impliment
complement not compliment
occurrence not occurence
dependent not dependant
auxiliary not auxillary
feasible not feasable
preceding not preceeding
referring not refering
category not catagory
consistent not consistant
PL/I not PL/1
descendant (noun) not descendent
its (belonging to it) not it’s (it is)”
 
FROM:
 
Mathematical Writing
by
Donald E. Knuth, Tracy Larrabee, and Paul M. Roberts
 
http://tex.loria.fr/typographie/mathwriting.pdf