In Anglo-Saxon these words were more numerous than they are at present. The following list is taken from the Cambridge Philological Museum, ii. 386.

Intrans. Infinitive. Trans. Infinitive.
Yrnan, to run Ærnan, to make to run.
Byrnan, to burn Bærnan, to make to burn.
Drincan, to drink Drencan, to drench.
Sincan, to sink Sencan, to make to sink.
Liegan, to lie Lecgan, to lay.
Sittan, to sit Settan, to set.
Drífan, to drift Dræfan, to drive.
Fëallan, to fall Fyllan, to fell.
Wëallan, to boil Wyllan, to make to boil.
Flëogan, to fly A-fligan, to put to flight.
Bëogan, to bow Bígan, to bend.
Faran, to go Feran, to convey.
Wacan, to wake Weccan, to awaken.

All these intransitives form their præterite by a change of vowel, as sink, sank; all the transitives by the addition of d or t, as fell, fell'd.

III. Verbs derived from nouns by a change of accent; as to survéy, from a súrvey. For a fuller list see the Chapter on Derivation. Walker attributes the change of accent to the influence of the participial termination -ing. All words thus affected are of foreign origin.

IV. Verbs formed from nouns by changing a final sharp consonant into its corresponding flat one; as,

The use to use, pronounced uze.
The breath to breathe — breadhe.
The cloth to clothe — clodhe.

CHAPTER XIX.

ON THE PERSONS.