var n,k:byte; f:text;
v:array[1..20] of byte;
procedure back(l:longint);
var i:longint;
begin
if l=k then begin
            for i:=1 to k do write(f,v[i],' ');
            writeln(f);
            end
else
begin
for i:=v[l]+1 to n do
    begin
    v[l+1]:=i;
    back(l+1);
    end;
end;
end;
begin
assign(f,'combinari.in');reset(f);
readln(f,n,k);
close(f);
assign(f,'combinari.out');rewrite(f);
back(0);
close(f);
end.