what is the output of the following pl/sql block,

declare
var1 number(2) :=1;
var2 number(2) :=5;
begin
for i in var1..var2 loop
dbms_output.put_line( 'i,var2: ' || i || ','||var2);
if i= 3 then
var2 :=7;
end if;
end loop;
end;


-- James.