Some processors have an instruction to find the location of the first bit set to 1 within a word (find the first one). Assume that a word is stored in r1. Write an ARM sequence of instructions that puts the location of the first bit in r1 that is set to 1 into r2. Count from the left, so that if bit 31 is set in r1 then the value in r2 will be 0. If only bit 0 is set in r1, then the value in r2 should be 31. If no bit in r1 is set, then the value in r2 should be 32.