22. A reduction period determined in relation to a sanctionable failure takes effect from—
(a)where the claimant has not been paid a jobseeker's allowance for the benefit week in which the sanctionable failure occurred, the first day of that benefit week;
(b)where the claimant has been paid a jobseeker's allowance for the benefit week referred to in paragraph (a), the first day of the first benefit week for which the claimant has not been paid a jobseeker's allowance; or
(c)where the amount of the award of the jobseeker's allowance for the benefit week referred to in paragraph (a) or (b) is already subject to a reduction because of a previous sanctionable failure, the first day of the first benefit week in respect of which the amount of the award is no longer subject to that reduction.