No of attempts for improvement exam as private candidate(pass in session 2012-2013)?

I am pass my 12 class in 2012-2013,but failed in maths(which include the physical education) .then i give improvement exam as a private candidate of all the five subjects 2013-2014,and again failed in maths.now, can i give improvement exam as private candidate in 2014-2015 in all five subjects from