**I need help with solving problem 4.8**

4.4 Given the function f(A, B, C, D)-2(0, 2, 4, 5, 6, 8, 10, 13, 15). Form all prime-implicants of size 4 and give the corresponding algebraic representations. implicants of size 8 and give the corresponding algebraic representations. 4.7 Form all prime-implicants of the function given in problem 4.5 and give the algebraic Identify all essential prime-implicants of the function given in problem 4.4 and find all minimal functions 4.8