Portuguese/Preterite tense irregular verbs

These are the verbs that are irregular in the preterite tense in Portuguese.

SER - To be

ESTAR - To be

TER - To have

IR - To go


 * Notice that the conjugations for ir are exactly the same for ser in the preterite tense.

VIR - To come

PODER - To be able to

FAZER - To do

SABER - To know