For IR i have degree and consulted fareed zakaria and other latest research papers. For philosophy, this subject has my heart and i consulted online sources for it. For british, i prepared it from william H Henry book. Lastly, as it was my second attempt and i went unallocated in the first. In the first bid, i scored 297 in optionals and this time i scored 420 in optionals. It was never about knowledge. In 2021 in fact i was more deficient in terms of knowledge. It is all about strategy, selection of subject and your heart.