letter B please. please do not manipulate the function and use only NAND gates. thank you!

19. Show a block diagram corresponding to each of the expressions below using only NAND gates. Assume all inputs are available both uncomplemented and complemented. Do not manipulate the functions to simplify the algebra. a. f= wy + wxz + xy'z + w x'z b. g= wx + (w' + y)(x + y) c. h= z(x'y + wx) + wly + xz) *d. F= D[B'(A' + E) + AE(B + C] + BD'(A'C' + AE)