for (x
/*a*/
in //b
y) //c
;
for (x in /*a*/ //b
y); //c
for (x /*a*/ in y); //b //c
//a
in y);
for(x in
y);
of //b
for (x of /*a*/ //b
for (x /*a*/ of y); //b //c
of y);
for(x of