In the IBPS PO Mains descriptive exam, formatting options for letter-writing and essays can be quite limited. The complete letter writing for PO Mains exams.Here are Letter Samples for SBI PO Mains Descriptive Paper, which will give you an exact idea of what to write in the descriptive paper. Subject- Asking for leave to attend PG classes. Sir,. I am Priyanka, your employee writing this letter to request you to grant me leave to attend my PG classes. Discover the secrets of writing a scoring letter in the English part of the IBPS PO Exam 2021! The descriptive section of IBPS PO Mains 2022 is as follows: Letter Index. Click here to Download Descriptive PDF for IBPS 2022. Today's session we're going to be focusing on letter writing and tomorrow we look at essay writing. In SBI PO 50 marks are allocated for descriptive writing while in IBPS PO 25 Marks are allocated for this section.