1. Infin. _dryven_ (driiv[*e]n); Pt. s. _dr[`o][`o]f_, _dr[`o]f_ (draof); Pt. pl. _driven_ (driv[*e]n); Pp. _driven_ (driv[*e]n). Thus the characteristic vowels are: _y_ (ii); _[`o][`o]_ (ao); _i_; _i_. So are conjugated _abyden_ or _abyde_, _agryse_, _aryse_, _byde_, _byte_, _glyde_, _ryde_, _ryse_, _ryve_, _shyne_, _shryve_, _slyde_, _smyte_, _(be)stryde_, _stryke_, _thryve_, _wryte_, _wrythe_[67]. Chaucer also treats _stryve_ as a strong verb, though it was originally weak; with pt. t. _str[`o][`o]f_, pp. _striven_. To this conjugation belongs _wryen_, to hide, put for _wr[=i]hen_; hence the pp. would be _wr[)i]h-en_, which appears in Chaucer as _wryen_. 2. Infin. _ch[=e]sen_ (cheez[*e]n); Pt. s. _ch[`e][`e]s_ (chaes); Pt. pl. _ch[=o]sen_ (chao.z[*e]n); Pp. _ch[=o]sen_ (chao.z[*e]n). Here the vowel of the pp. has been lengthened, and the vowel of the pt. pl. assimilated to that of the pp. So are conjugated: _b[=e]den_, to offer; _brewen_ or _brewe_ (pt. t. _brew_), _cleve_, to slit, _crepe_, _flee_ (pt. t. _fleigh_, _fley_), _flete_, to float, _flye_, to fly (pt. t. _fleigh_, _fley_, pl. and pp. _flowen_), _lese_, to lose (pp. _loren_, _lorn_), _lye_, to tell lies, _sethe_, to boil (pt. t. _s[`e][`e]th_, pp. _s[)o]den_), _shete_, to shoot (pp. _sh[)o]ten_). Here belong a few verbs with _ou_ (uu) in the infinitive; as _brouke_, _shouven_, to shove (pt. t. _sh[`o][`o]f_, pp. _sh[)o]ven_). Also the pp. _l[)o]ken_, as if from _louken_. 3. In this class there are two sets: (_a_) verbs in which the radical _e_ is preserved, as _swelle_; (_b_) those in which _e_ becomes _i_ before _m_ or _n_, as _drinke_. (_a_) Infin. _swellen_; Pt. s. _swal_; Pt. pl. _swollen_; Pp. _swollen_. So are conjugated: _bresten_ or _breste_, _delve_, _fighte_ (originally _feghte_; pt. s. _faught_, pt. pl. and pp. _foughten_), _helpe_, _kerve_, _melte_, _sterve_, _thresshe_, _yelde_, _yelpe_. Here belongs _worthen_ (originally _werthe_); the pt. t. and pp. do not occur. _Abreyde_ was also originally a strong verb, and Chaucer twice uses the pt. t. _abrayd_ or _abreyd_, riming with the pp. _sayd_ or _seyd_; but it was easily confused with weak verbs that made the pt. t. in _-de_, and in all other places appears as a weak verb. It was already obsolescent. (_b_) Infin. _drinken_; Pt. s. _drank_[68]; Pt. pl. _dronken_ (drung.k[*e]n); Pp. _dronken_ (drung.k[*e]n). So are conjugated: _biginnen_ or _biginne_, _binde_, _climbe_ (pt. s. _clomb_), _finde_ (pt. s. _fond_, pt. pl. and pp. _founden_), _ginne_, _grinde_ (pp. _grounden_), _ringe_, _renne_ ( = _rinne_), _shrinke_, _singe_ (pt. s. _song_), _sinke_, _slinge_ (pt. _slong_), _spinne_, _springe_ (pt. s. _sprong_), _stinge_ (pt. s. _stong_), _stinke_, _swimme_, _swinke_, _thringe_ (pt. s. _throng_), _winde_ (pt. s. _wond_, pp. _wounden_), _winne_, _wringe_ (pt. s. _wrong_).