The original e reappears in the participial stems. It was changed to i in the present stems on account of a former -jan in the infinitive (bid-jan, etc.). See 61]. To the same cause is due the doubling of consonants in the infinitive. All simple consonants in O.E., with the exception of r, were doubled after a short vowel, when an original j followed.

[116.]

Class VI: The “Shake” Conjugation.

Succession of Vowels: a, ō, ō, a.

scac-an,scōc,scōc-on,gescac-en,to shake.
far-an,fōr,fōr-on,gefar-en,to go [fare].
[117.]

Class VII: The “Fall” Conjugation.

Vowel Succession:ā
ǣ
, ē, ē,ā
ǣ
; orea
ēa
ō
, ēo, ēo,ea
ēa
ō
.
(1)hāt-an,hēt,hēt-on,gehāt-en, to call, name,
command.
lǣt-an,lēt,lēt-on,gelǣt-en, to let.
(2)feall-an,fēoll,fēoll-on,gefeall-en, to fall.
heald-an,hēold,hēold-on,geheald-en, to hold.
hēaw-an,hēow,hēow-on,gehēaw-en, to hew.
grōw-an,grēow,grēow-on,gegrōw-en, to grow.

Note 1.—This class consists of the Reduplicating Verbs; that is, those verbs that originally formed their preterits not by internal vowel change (ablaut), but by prefixing to the present stem the initial consonant + e (cf. Gk. λέ-λοιπα and Lat. dĕ-di). Contraction then took place between the syllabic prefix and the root, the fusion resulting in ē or ēo: *he-hat > heht > hēt.