Verilog Code for part b and c please. Dont copy the answer on here. Please label what parts are which

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: 12120a1 2120a101 2120 Sumi 2021 dim o21 error ijio - overflow sum +iio underflow diff (c) Create the complete two-bit computer circuit using hierarchical Verilog code. It should have inputs ao, a1, bo, bi, io, and ii, and outputs fo, fi, and error