If NOIDA is written as OPJEB, then what will be the code for DELHI?

Each letter in the word NOIDA is moving one step forward and forms the code OPJEB. Similarly, if the letters of the word DELHI moves one step forward, then D will be written as E, E as F, L as M, H as I, and I as J. So, the code for DELHI will be EFMIJ.