TWIF  2021 Anti -Doping Rules  v1 Page 33 of 67    Aggravating Circumstances , unless the Athlete  or other Person  can establish that he or she did not knowingly commit the anti -doping rule violation.49  10.5 Elimination of the Period of Ineligibility  where there is No Fault or Negligence   If an Athlete  or other Person  establishes in an individual case that he or she bears No Fault or Negligence , then the otherwise applicable period of Ineligibility shall be eliminated.50  10.6 Reduction of the Period of Ineligibility  based on No Significant Fault or Negligence   10.6.1   Reduction of Sanctions in Particular Circumstances for Violations of Article 2.1  (Presence of a Prohibited Substance ), 2.2 (Use or Attempted Use ) or 2.6  (Possession  of a Prohibited Substance  or a Prohibited Method ).