#include <cstdio>

int n,m, viz[21]={0}, ans[21]={0};

void back(int k)
{
    if( k == m ){
        for(int i=1;i<=m;++i){
            printf("%d ",ans[i]);
        }
        printf("\n");
        return;
    }
    
    for(int j=ans[k]+1;j<=n;++j) {
        if( viz[j] == 0 ) {
            viz[j] = 1;
            ans[k+1] = j;
            back(k+1);
            viz[j] = 0;
        }
    }
}

int main()
{
    freopen("combinari.in","r",stdin);
    freopen("combinari.out","w",stdout);


    scanf("%d%d",&n,&m);

    back(0);

    return 0;
}