(iii) The four accented syllables of the line all alliterate together,
Gódwine ond Gódwīg gū̀de ne gȳ́mdon. Byrhtn. 192.
In the majority of cases the same alliterative letter is not employed in two successive lines, but we find cases like
þā tōbrǣ́d Sámson bḗgen his éarmas
þæt þā rā́pas tobúrston þe he mid gebúnden wæs.Ælf. Judges 269;
and earlier in Andreas 70, 197, 372, 796, 815, 1087, &c., or in Beowulf 403, 489, 644, 799, 865, 898, &c.
And even three lines in succession, as
swýlce he āfḗdde of fíxum twā́m
ond of fī́f hlā́fum fī́ra cýnnes