#include<stdio.h>

 #include<iostream>

 #include<algorithm>

 #include<string.h>

 using namespace std;

 int main()

 {

     char s1[],s2[];

     while(cin>>s1)

     {

         cin>>s2;

         int len1[],count=;

         memset(len1,,sizeof(len1));

         int l1=strlen(s1);

         int l2=strlen(s2);

         for(int i=; i<l1; i++)

         {

             for(int j=; j<l2; j++)

             {

                 if(s1[i]==s2[j])

                 {

                     len1[i]=j;

                     count++;

                     s2[j]=' ';

                     break;

                 }

             }

         }

         bool flag=true;

         if(count!=l1)

             flag=false;

         else

         for(int i=; i<l1; i++)

         {

             if(len1[i]<len1[i-])

             {

                 flag = false;

                 break;

             }

         }

         if(flag)cout<<"PASS"<<endl;

         else cout<<"FAIL"<<endl;

         memset(s1,NULL,sizeof(s1));

         memset(s2,NULL,sizeof(s2));

     }

     return ;

 }