char a[]{'A','B','C','D','E'}; char b[]{'J','K','L','M','N'}; for(int i=0;i<5;i++) for(int j=0;j<5;j++) { if((i==0&&j==0)||(i==3&&j==3)||(i==4&&j==3)) contiune; cout<<a[i]<<b[j]<<endl; }