true * null; // expect runtime error
true * true; // expect runtime error
true * "s"; // expect runtime error
true * 123; // expect runtime error

null * null; // expect runtime error
null * true; // expect runtime error
null * "s"; // expect runtime error
null * 123; // expect runtime error

123 * null; // expect runtime error
123 * true; // expect runtime error
123 * "s"; // expect runtime error

"s" * null; // expect runtime error
"s" * true; // expect runtime error
"s" * 123; // expect runtime error