functio arity_0() {
   "this function has arity 0" print;
}

functio arity_1(arg1) {
   "this function has arity 1" print;
   arg1 print;
}

functio arity_2(arg1, arg2) {
   "this function has arity 2" print;
   arg1 print;
   arg2 print;
}

functio arity_3(arg1, arg2, arg3) {
   "this function has arity 3" print;
   arg1 print;
   arg2 print;
   arg3 print;
}

owo arity_0();
owo arity_1("foo");
owo arity_2("foo", "bar");
owo arity_3("foo", "bar", "baz");

var i1 = arity_0 * arity_1;
i1("second");

"----" print;

var i2 = arity_1 * arity_0;
i2("first");

"----" print;

var ifancy = arity_3 * arity_3;
ifancy("left1", "right1", "left2", "right2", "left3", "right3");

"----" print;

var another = arity_0 * arity_3;
another("right1", "right2", "right3");