CHIP Mux {
    IN a, b, sel;
    OUT out;

    PARTS:
    And(a=a,b=b,out=anotb);
    And(a=a,b=b,out=ab);
    And(a=a,b=b,out=notab);
    And(a=anotb,b=sel,out=anotbnotsel);
    And(a=ab,b=sel,out=abnotsel);
    And(a=notab,b=sel,out=notabsel);
    And(a=ab,b=sel,out=absel);
    Or(a=anotbnotsel,b=abnotsel,out=anotbnotselabnotsel);
    Or(a=notabsel,b=absel,out=notabselabsel);
    Or(a=anotbnotselabnotsel,b=notabselabsel,out=out);
}