Build NFAs for the following two languages. a) The set of strings over alphabet fa, b, c such that the last symbol in the string has appeared before. b) The set of strings over alphabet fa, b, c) such that the last symbol in the string has not appeared before. You can assume that neither of these two languages contain e in them

Write a program that defines symbolic names for several string literals (chars between quotes). * use each symbolic name in a variable definition. * use of symbolic to compose the assembly code instruction set can perform vara = (vara - varb) + (varc - vard); ensure that variable is in unsigned integer data type. * you should also further enhance your symbolic logic block to to perform expression by introducing addition substitution rule. vara = (vara+varb) - (varc+vard). required: debug the disassembly code and note down the address and memory information.