#include<iostream> // cin\cout\endl #include<cstdio> //scanf()\printf() #include<cstring> // strcpy()\strcat()\strcmp()\strlen()\memset() #include<cmath> //sqrt()\pow()\abs()\ceil()\floor()\max()\min() using namespace std; int main(){ char i; int n,k; cin>>n>>k; for(i=n+96;i<=k+96;i=i+1){ cout<<i<<" "; } cout<<endl; return 0; }