2-input a’@ b @ @ a’@ b’@ a’@ b a’@ a’@ b’ a’@ b c’ c’ c c b’@ 00 01 000 001 011 010 @ @ @ a b’@ a b a @ b’@ a @ b’ a @ b c’ c’ c a @ b @ c 10 11 100 101 111 110 4-input 0000 0001 0011 0010 a’@b@c@d a’@b@c’@d 0100 0101 0111 0110 a@b@c’@d a@b@c@d 1100 1101 1111 1110 a@b’@c@d a@b’@c’@d 1000 1001 1011 1010 The cells are arranged as above, but we write them empty, like this:
2-input a’@ b’ a’@ b a’@ b’@ c’ a’@ b’@ c a’@ b @ c a’@ b @ c’ 00 01 000 001 011 010 a @ b’ a @ b a @ b’@ c’ a @ b’@ c a @ b @ c a @ b @ c’ 10 11 100 101 111 110 4-input 0000 0001 0011 0010 a’@b@c’@d a’@b@c@d 0100 0101 0111 0110 a@b@c’@d a@b@c@d 1100 1101 1111 1110 a@b’@c’@d a@b’@c@d 1000 1001 1011 1010 The cells are arranged as above, but we write them empty, like this: