As 403 defined in section 3(10) private land means: "(a) in the case of an estate within the meaning of sub clauses (a), (b), (c) or (e) of clause (2) means the domain or home farm land of the landholder by whatever designation known such as, kambattam, khas, sir, or pannai, and includes all land which is proved to have been cultivated as private land by the landholder himself, by his own servants or by hired labour, with his own or hired stock, for a continuous period of twelve years immediately before the commencement of this Act; and (b) in the case of an estate within the meaning of subclause (d) of clause (2), means (i) the domain or home farm land of the landholders, by whatever designation known, such as kambattam, khas, sir or pannai; or (ii) land which is proved to have been cultivated as private land by the landholder himself, by his own servants or by hired stock, for a continuous period of twelve years immedi ately before the first day of July 1908, provided that the landholder has retained the kudivaram ever since and has not converted the land into ryoti land; or (iii) land which is proved to have been cultivated by the landholder himself, by his own servants or by hired labour, with his own or hired stock, for a continuous period of twelve years immediately before the first day of November, 1933, provided that the landholder has retained the kudiva ram ever since and has not converted the land into ryoti land; or (iv) land the entire kudivaram in which was acquired by the landholder before the first day of November, 1933 for valu able consideration from a person owning the kudivaram but not the melvaram, provided that the landholder has retained the kudivaram ever since and has not converted the land into ryoti land, and provided further that, where the kudivaram was acquired at a sale for arrears of rent, the land shall not be deemed to be private land unless it is proved to have been cultivated by the landholder him 404 self, by his own servants or by hired labour, with his own or hired stock.