UVa 441

#include<stdio.h>
int main()
{
    int T,a[20],c=0,i,j,k,l,m,n;
    while(1){
        scanf("%d",&T);
        if(T==0)
            break;
        if(c!=0)
            printf("\n");
        c++;
        for(i=1;i<=T;i++){
            scanf("%d",&a[i]);
        }
        for(i=1;i<=T-5;i++){
            for(j=2;j<=T-4;j++){
                if(j<=i)
                continue;
                for(k=3;k<=T-3;k++){
                    if(k<=j || k<=i)
                    continue;
                    for(l=4;l<=T-2;l++){
                        if(l<=k || l<=j || l<=i)
                        continue;
                        for(m=5;m<=T-1;m++){
                            if(m<=l || m<=k || m<=j || m<=i)
                            continue;
                            for(n=6;n<=T;n++){
                                if(n<=m || n<=l || n<=k || n<=j || n<=i)
                                continue;
                                printf("%d %d %d %d %d %d\n",a[i],a[j],a[k],a[l],a[m],a[n]);
                            }
                        }
                    }
                }
            }
        }
    }
    return 0;
}