0 QTRS
not(not(x)) → x not(or(x, y)) → and(not(x), not(y)) not(and(x, y)) → or(not(x), not(y)) and(x, or(y, z)) → or(and(x, y), and(x, z)) and(or(y, z), x) → or(and(x, y), and(x, z))