pls answer articleship's common problem

i have 285 days of CREDIT WITH ME as i used to work for 10 hrs a day during articleship.

Now the problem is-

i have 333 days of leave during articleship taken for exam attempts

duration of articleship
1-feb-07 to 31-jul-10
as per registration form 3.5 years

keeping in view the above 3 things.. i.e.
CREDIT
LEAVE TAKEN
and DURATION OF ARTICLESHIP

please explain do i have to do articleship extension after 31st July? or is it over after adjusting credit of 285 days.