N=readline(I='indexOf')
!function q(n,a,p,i){for(i=-1;++i<N;)a[I](i)+p[I](s=i+n+10)+p[I](t=i-n+40)+3||(v=n?S+i:i,n+1<N?q(n+1,a+v,s+S+t+S+p):print(a+v))}(0,'',S=' ')