10.2 Ineligibility for Presence, Use or Attempted Use , or Possession of a Prohibited Substance or Prohibited  Method   The period of Ineligibility for a violation of Article 2.1, 2.2 or 2.6 shall be as follows, subject to potential elimination, reduction or suspension pursuant to Article 10.5, 10.6 or 10.7:   10.2.1  The period  of Ineligibility , subject  to Article  10.2.4,  shall  be four (4) years  where:   10.2.1.1  The anti -doping rule violation does not involve a Specified Substance or a Specified Method , unless the Athlete or other Person can esta blish that the anti -doping rule violation was not  intentional.38  10.2.1.2  The anti -doping rule violation involves a Specified Substance or a Specified Method and IFA can establish that the anti -doping rule violation was  intentional.