I'm reading a document about "The Proclamation of Henry III", in which the text is presented and a short commentary and glossary follow.
I'm interested in the survival of some of the distinct verbal inflections classes of Old English. In particular, I'm referring to the verbs "swerien", "makien" and "werien": I noticed that these particular verbs ends in -ien, while the usual suffix of the infinitive/subjunctive verbal forms in the text is -en.
In the glossary, I came across some dictionary-like entries, such as this:
swerien, 4, swear, 3 p. pi. subj. after hoaten ; ags. swerian inf., swerion subj. ; ge. sweren; p. 85. Str. 560.
Can you help me to find out what is special about these verbs?