#include <stdio.h>

char *stop[] = {"style", "tdstyle", "trstyle", "url", "page", "image", "rightimage", "rightthumb", "thumb"};
#define nstop (sizeof(stop)/sizeof(stop[0]))

int level = 0;
int suppresslevel = 0;
int firstword = 1;
char word[4096], *w;

static inline void process_word() {
    if(firstword && !suppresslevel) {
        int i;
        for(i=0; i < nstop; i++) {
            if(strcmp(word, stop[i]) == 0) {
                suppresslevel = level; break;
            }
        }
    }
    if(!firstword && !suppresslevel && w != word) {
        puts(word);
    }
    firstword = 0;
    memset(word, 0, sizeof(word));
    w = word; 
}

int main(int argc, char **argv) {
    int c;
    FILE *f;

    if(argc > 1) f = fopen(argv[1], "r");
    else f = stdin;

    w = word; 

    while((c = getc(f)) != EOF) {
        if(c == '\\') {
            c = getc(f);
        } else if(c == '[') {
            process_word();
            level ++; firstword = 1;
        } else if(c == ']') {
            process_word();
            if(level == suppresslevel) suppresslevel = 0;
            if(level) level --;
        } else if(isspace(c)) {
            process_word();
        } else {
            if(w-word < sizeof(word) - 1) {
                *w++ = c;
            }
        }
    }
    return 0;
}