Stratening or Straitening: How To spell?
The word Stratening is misspelled against Straitening, which is present continuous of "Straiten"
Word contains consecutive vowels 'AI' in between alphabets str & tening is misspelled as 'A'Wrong Spelling:  str-a-tening  Correct Spelling:  str-ai-tening 
Find more wrongly spelled words of Straitening to spell it well.