int counter = 0;
    for(i = 0; i < size; ++i){
        if(i == return_value) {
            strcpy(*(*(result)+i ),second);
        }
        else {
            for(j = counter; j < size; j++)
            {
//              printf("f: %c\n", *(first+j));
                if(j == return_value) {
                    counter++;
                    continue;
                }
                *(*(*(result)+i)) = *(first+j); < --- na tym SIGSEGV wypierdala
                *(*(*(result)+i)+1) = '\0';

                counter++;
                break;
            }
        }
    }