%{

	#include<stdio.h>

%}

%%

[a]*[b|c][a]             printf("token matched \n");
.*                       printf("input is wrong \n");

%%

int yywrap(){
    return 1;
}
int main(){
    
    printf("correct pattern for input is : a*.(b|c).a \n");

    yylex();

    return 0;
}