if:C5
else:C5
endif:C5
for:C5
while:C5
switch:C5
endsw:C5
case:C5
do:C5
goto:C5
end:C5
fi:C5
esac:C5
done:C5
default:C5

int:C3
long:C3
unsigned:C3
const:C3
bool:C3
float:C3
short:C3
double:C3
char:C3
void:C3
inline:C3

node:C4
FILE:C4
struct:C4
class:C4
enum:C4
typedef:C4

argv:B
argc:B
exit:B
stdout:B
stderr:B
fork:B
malloc:B
free:B
new:B
delete:B
break:B
size_of:B
cout:B
cin:B
printf:B
fprintf:B
sprintf:B
putc:B
fputc:B
fseek:B
scanf:B
return:B
fopen:B
fclose:B
begin:B
documentclass:B
vspace:B

#if:I
#ifdef:I
#ifndef:I
#include:I
#else:I
#elsif:I
#endif:I
#define:I
#undef:I

NULL:C2
EOF:C2