Assessment year- previous year

Amit (Accountant) (261 Points)

27 April 2014  

If a person files his return for FY 12-13 in the year FY 13-14, then assessment year is AY-13-14 and corresponding previous year is 12-13. But, if one files his return for FY 12-13 in the year FY 14-15, then what is the year of assessment (assessment year) and what is the corresponding previous year?

For experts, this is an easy question, but, for me It is confusing. 

Pl. help me out