joj1009

 

#include <iostream>

#include <string>

using namespace std;

int main ()

{

int n,i,j;

char ch,h;

int temp=1;

while (cin>>n,n)

{

if(temp!=1)

{cout<<endl;}

j=0;

ch='a';

//if(n==0) break;

for(i=1;i<=n;i++)

{

h=ch+j%26;

cout<<h;

j++;

temp++;

}

cout<<endl;

 

for(i=2;i<=n-1;i++)

{

h=ch+j%26;

cout<<string(n-i,' ')<<h++;

cout<<endl;

j++;

temp++;

}

 

for(i=1;i<=n;i++)

{

h=ch+j%26;

cout<<h++;

j++;

temp++;

}

cout<<endl;

}

return 0;

}