1 #include <cstdio> 2 #include <cstring> 3 #include <algorithm> 4 #include <iostream> 5 using namespace std; 6 int main(){ 7     printf("a e\nbdf\nc g\n"); 8     printf("h  n\ni mo\njl p\nk  q\n"); 9     printf("r   z\ns  ya\nt x b\nuw  c\nv   d\n");10     printf("e    o\nf   np\ng  m q\nh l  r\nik   s\nj    t\n");11     printf("u     g\nv    fh\nw   e i\nx  d  j\ny c   k\nzb    l\na     m\n");12     printf("n      b\no     ac\np    z d\nq   y  e\nr  x   f\ns w    g\ntv     h\nu      i\n");13     printf("j       z\nk      ya\nl     x b\nm    w  c\nn   v   d\no  u    e\np t     f\nqs      g\nr       h\n");14     printf("i        a\nj       zb\nk      y c\nl     x  d\nm    w   e\nn   v    f\no  u     g\np t      h\nqs       i\nr        j\n");15 16     return 0;17 }