Theoretically type E might be looked on as a type with equal feet, if divided thus, –́ × | × –́, but by far the greatest number of instances of this type show at the beginning of the hemistich one trisyllabic word which forbids such a division of feet, as _wéorðm[`y]ndum þā́h_, Beow. 8.[68] Types like × × –́ - and ×̀ × –́ –́, which we might expect to find, do not occur in Old English poetry. In addition to these ordinary four-membered hemistichs there are others lengthened by the addition of one syllable, which may be unaccented, or have the secondary accent. These extended forms (_erweiterte Formen_)[69] may be composed either of 2+3 members or of 3+2 members. These extended hemistichs must be carefully distinguished from the hemistichs which have one or more unaccented syllables _before_ the first accented syllable, in types A, D, and E; such a prefix of one or more syllables is called an _anacrusis_ (Auftakt).[70] The simple five types of the hemistich admit of variation: i. by extension (as above); ii. by resolution (⏑́ × for –́) and shortening of the long accented syllable (⏑́); iii. by strengthening of thesis by means of a secondary accent (_Steigerung_); iv. by increase in the number of unaccented syllables forming the thesis; also (less frequently) v. by variation in the position of the alliteration, and vi. by the admission of anacruses; the varieties produced by the last-mentioned means are not sub-types but parallel forms to those without anacruses. In describing and analysing the different combinations which arise out of these means of variation, and especially the peculiar forms of the sub-types, the arrangement and nomenclature of Sievers will be followed.[71] Analysis of the verse types. I. _Hemistichs of four members_. § =25. Type A= has three sub-types, A1, A2, A3. =The sub-type A1= (–́ × | –́ ×) is the normal form with alliteration of the first arsis in each hemistich, or with alliteration of both arses in the first hemistich and one in the second, and with syllables in the thesis which are unaccented according to the usual practice of the language; examples are, _þḗodnes þêgnas_ An. 3, _hȳ́ran scólde_ Beow. 106, _gómban gýldan_ Beow. 11. This is the commonest of all the types; it occurs in Beowulf, according to Sievers, 471 times in the first and 575 times in the second hemistich, and with the like frequency in the other poems.