u6 Accidence [§§248-9
assimilation of *-lih to -lif first took place in twalif because of the preceding labial (§ 134 note), and then, at a later period, the -lif was extended to 'áinlif (cp. dat. álnlibim) for older *áinlih. 13 to 19 were formed by the simple ordinals plus taíhun, but of these only fidwōrtaíhun and fimftaíhun are extant.
The decades 20 to 6o were formed in prim. Germanic from the units 2 to 6 and the abstract noun *tegunđ- Indg. Mekmt1, decade, whence the Goth, stem-form tlgu-which went over into the u-declension with a plural tigjus, as nom. twái tigjus, twenty, dat. twáim tigum. Prim. Germanic *tegunđi is a derivative of prim. Germanic 'texun (= Indg. *dēkm, Gr. δέκα, Lat. decem, Goth, taíhun) with change of χ to g by Verner's law (§ 136) and the loss of the final consonants (§ 87). These numerals govern the gen. case. The existing ace. gen. dat. forms •are:—ace. þrins tiguns, fiđwōr tiguns, fimf tiguns; gen. þrijē tlgiwē; dat. twáim tigum, saíhs tigum. The formation of the numerals 70-100 is difficult to explain; for an account of the various explanations hitherto proposed, see Osthoff-Brugmann's Morphologische Unter-suchungen, v. pp. 11-17. The numerals 200, 300, 500, 900 are formed from the units and the neut. noun hund (= Gr. ί-κατ&ν, Lat. centum), hundred, which is declined like waúrd (§ 181). They govern the gen. case. The only existing inflected forms of the oblique cases are : dat. twáim hundam, fimf hunđam; þūsundi is a fern, noun, declined like bandi (§ 193), and governs the gen. case. The examples of the oblique cases are: dat. fiđwōr þūsunđjōm, fimf þūsunđjōm, and those given on p. 115.
§ 248. The first three cardinal numerals are declinable in all cases and genders.
§ 249. (i) áins, neut. áin, áinata, fem. áina, is always strong and is declined like blinds (§ 226). Plural forms meaning only, alone also occur.