correr to run
Preterite verbs that end in -er have different endings than they do in the present tense. Take special note of the differences in the ‘yo’ form and the ‘el’, ‘ella’, and ‘Ud.’ forms
corr
corrí
corr
corrí corriste
corrí corriste corr
corrí corriste corrió
corrícorr corriste corrió
corrícorrimos corriste corrió
corrícorrimos corristecorr corrió
corrícorrimos corristecorristeis corrió
corrícorrimos corristecorristeis corriócorr
corrícorrimos corristecorristeis corriócorrieron
corrí I rancorrimos we ran corriste you rancorristeis you all ran corrió he ran she ran you ran corrieron they ran you ran