#include<cstdio>
int i,j,n,fr[20],x[20],k;
FILE *f,*g;
void back(int m){
    int i;
    if(m>k){
        for(i=1;i<=k;i++){
            fprintf(g,"%d ",x[i]);
        }
        fprintf(g,"\n");
        return;
    }
    for(i=x[m-1]+1;i<=n;i++){
        x[m]=i;
        back(m+1);
    }
}
int main(){
    f=fopen("combinari.in","r");
    g=fopen("combinari.out","w");
    fscanf(f,"%d%d",&n,&k);
    back(1);
    fclose(f);
    fclose(g);
    return 0;
}