#include<iostream.h>
void main()
{int i,x,n,xx,ras,nr,ca,b,a,c;
cin>>a>>b;
nr=0;
for(i=a;i<=b;i++)
    {
        x=i;
        ras=0;
        while(x!=0){
                c=x%10;
                ras=ras*10+c;
                x=x/10;
                }
        if(i==ras && ras<=b)
        //cout<<i<<","<<x<<" "; i=0 boule
        cout<<i<<","<<x<<" ";
        }

}