#include<cstdio>
int n,m,x[25],fr[25];
FILE *f,*g;
void back(int k){
    int i;
    if(k==m+1){
        for(i=1;i<=m;i++){
            fprintf(g,"%d ",x[i]);
        }
        fprintf(g,"\n");
        return;
    }
    for(i=x[k-1];i<=n;i++){
        if(fr[i]==0){
            fr[i]=1;
            x[k]=i;
            back(k+1);
            fr[i]=0;
        }
    }
}
int main(){
    f=fopen("combinari.in","r");
    g=fopen("combinari.out","w");
    fscanf(f,"%d%d",&n,&m);
    x[0]=1;
    back(1);





    fclose(f);
    fclose(g);
    return 0;
}