12. The condition is that—
(a)where the claimant is a single claimant or a lone parent, he is aged less than 60 and the additional condition specified in paragraph 13 is satisfied; or
(b)where the claimant has a partner, either—
(i)the claimant is aged less than 60 and the additional condition specified in paragraph 13(1)(a) or (b) is satisfied by him; or
(ii)his partner is aged less than 60 and the additional condition specified in paragraph 13(1)(a) is satisfied by his partner.