Some people think that there are four basic logic functions, AND, OR, NOT, and BUT. Figure...

Some people think that there are four basic logic functions, AND, OR, NOT, and BUT. Figure is a possible symbol for a 4-input, 2-output BUT gate. Invent a useful, nontrivial function for the BUT gate to perform. The function should have something to do with the name (BUT). Keep in mind that, due to the; symmetry of the symbol, the function should be symmetric with respect to the A and B inputs of each section and with respect to sections 1 and 2. Describe your BUT’s function and write its truth table.

Figure