Use Verily code to answer this question please.

7. Use Verilog code to describe a two-bit computer. (a) Write the sum, difference, and error functions in 3 separate structural Verilog codes. b) Write a behavioral Verilog code for the following functions: error 2120 . overflowsum + i180 . underflow-diff = (c) Create the complete two-bit computer circuit using hierarchical Verilog code. It should have inputs ao, ai, bo, b, io, and ii, and outputs fo, fi, and error