e lusi lusum (est) _play_
trudo trudere trusi trusus _push_
laedo laedere laesi laesus _injure_, _hurt_
claudo claudere clausi clausus _close_
plaudo plaudere plausi plausum (est) _clap_
explodo explodere explosi explosus _hoot off_
cedo cedere cessi cessum (est) _withdraw_
divido dividere divisi divisus _divide_
premo premere pressi pressus _press_

2. Perfect in -i with Reduplication.

ab-do abdere abdidi abditus _conceal_
red-do red-dere reddidi redditus _return_
So _addo_, _condo_, _dedo_, _perdo_, _prodo_,
_trado_, etc.
con-sisto consistere constiti ---- _take one's stand_
resisto resistere restiti ---- _resist_
circumsisto circumsistere circumsteti ---- _surround_
cado cadere cecidi casurus _fall_
caedo caedere cecidi caesus _kill_
pendo pendere pependi pensus _weigh_, _pay_
tendo tendere tetendi tentus _stretch_
tundo tundere tutudi tusus, tunsus _beat_
fallo fallere fefelli (falsus, as _deceive_
Adj.)
pello pellere pepuli pulsus _drive out_
curro currere cucurri cursum (est) _run_
parco parcere peperci parsurus _spare_
cano canere cecini ---- _sing_
tango tangere tetigi tactus _touch_
pungo pungere pupugi punctus _prick_

NOTE.--In the following verbs the perfects were originally reduplicated,
but have lost the reduplicating syllable:--
per-cello percellere perculi perculsus _strike down_
findo findere fidi fissus _split_
scindo scindere scidi scissus _tear apart_
tollo tollere sus-tuli sublatus _remove_

3. Perfect in -i with Lengthening of Stem Vowel.

ago agere egi actus _drive_, _do_
perago peragere peregi peractus _finish_
subigo subigere subegi subactus _su