#include<iostream> using namespace std; int main(){ char letter[26]={'a','b','c','d','e','f','g','h','i','j','k','l','m','n','o','p','q','r','s','t','u','v','w','x','y','z'}; for(int i=0;i<13;i++){ cout<<letter[i]; } cout<<endl; for(int i=13;i<26;i++){ cout<<letter[i]; } cout<<endl; for(int i=25;i>12;i--){ cout<<letter[i]; } cout<<endl; for(int i=12;i>-1;i--){ cout<<letter[i]; } }