=Alliteration.= 1. The first hemistich has commonly two alliterative sounds, which fall as a rule on the first and second beats: _ge=s=ēoð =s=órga mǣ́ste._ Crist 1209; more rarely on the second and third beats, as in _wǣ́ron hyra =r=ǣ́das =r=ī́ce._ Dan. 497; sometimes on the first and third beats, as _=l=ī́f hēr mén for=l=ḗosað._ Rhyming Poem 56. Now and then we find hemistichs with three alliterations: _=d=ól bið sē þe him =d=ríhten ne on=d=rǣ́deð._ Seafarer 106, _=þ=ȳ́ sceal on =þ=ḗode ge=þ=ḗon._ Gnom. Ex. 50; and others with one alliteration only, in which case the alliteration falls more rarely on the first beat, as _=c=ýning sceal rī́ce héaldan =c=éastra bēoð féorran gesȳ́ne._ Gnom. Ex. 1, than on the second, as _þæt sē wǣ́re =m=íhta wáldend sē þe hī́e of þām =m=írce genérede._ Dan. 448. 2. In the second hemistich the chief alliterative sound, the head-stave, generally falls on the second accented syllable, as in the last example, and only exceptionally on the first accented syllable, as _=St=ȳ́ran sceal mon =st=róngum mṓde. =St=órm oft hólm gebríngeð._ Gnom. Ex. 51. § =38. The origin and structure of the lengthened verse.= It is clear from the comparative infrequency and the special use to which it is put that the lengthened line must be looked upon as originating in some way from the normal four-beat line. Two explanations of its development have been given. The first, which is Sievers's original view,[90] is that a foot or measure with the form –́ . . . (i.e. one accented syllable plus several unaccented ones) was prefixed to one of the five normal types; hence –́ × prefixed to A would give the form –́ × | –́ × –́ ×, and – × prefixed to B would give –́ × | × –́ × –́. The other explanation, given by Luick,[91] is that the lengthened hemistich is due to a blending of several types of the normal kind in this way. The hemistich starts with the beginning of one of the normal types A, B, C, then with the second accented syllable another type is begun and continued, as if the poet found the original beginning inadequate to express his emotion. The manner in which the blending of two normal types results in new lengthened types of three beats will be seen in the following illustrations: A –́× –́ × +C × –́ –́ × -------------- gives AC –́ × –́ –́ ×; A –́ × –́ × +D –́ –́ ×̀ × -------------- gives AD – × –́ –́ ×̀ ×; B × –́ × –́ +C × –́ –́ × ------------- gives BC × –́× –́ –́ ×; B × –́ × –́ +A –́ × –́ × -------------- gives BA × –́ × –́ × –́ ×;