var s:array[0..20] of longint;
    n,k:longint;

procedure back(l:longint);
var i:longint;
begin
if (l=k) then
        begin
        for i:=1 to k do
                write(s[i],' ');
        writeln;
        end
else
        begin
        for i:=s[l]+1 to n do
                begin
                s[l+1]:=i;
                back(l+1);
                end;
        end;
end;

begin
assign(f,'combinari.in');reset(f);
assign(g,'combinari.out');rewrite(g);
readln(f,n,k);
back(0);
close(f);close(g);
end.