Treuning or Training: How To spell?
The word Treuning is misspelled against Training, a noun meaning "The act of one who trains; the act or process of exercising, disciplining, etc.; education."
Word contains consecutive vowels 'AI' in between alphabets tr & ning is misspelled as 'EU'Wrong Spelling:  tr-eu-ning  Correct Spelling:  tr-ai-ning 
Check more misspelled words of Training to spell it correct.