#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(){ int n,m; char x; cin>>n>>m; for(x='a'+(n-1);x<='a'+(m-1);x++){ cout<<x<<" "; } return 0; }