Strong Verb, Class 2, vowel gradation eo, ea, u, o (i.e., Infinitive, First Preterit, Second Preterit, Past Participle)
Examples:
sceotan, sceat, scuton, scoten; cf. gesceotan, ofsceotan (var. 3s pret. ofscet)
forleosan, forleas, forluron, forloren
ceosan, ceas, curon, coren (var. inf. ciosan)
Examples with u in infinitive:
bugan, beag, bugon, bogen (var. 3s pret. beah; cf. gebugan)
scufan, sceaf, scufon, scofen (var. 3p pret. scufun)
Contracted forms:
fleon, fleah, flugon, flogen
teon, teah, tugon, togen