Ending for -ar verb in the "yo" form

-é

Ending for -ar verb in the "tu" form

-aste

Ending for -ar verb in the "el" form

-ó

 Ending for -ar verb in the "nosotros" form

 -amos

Ending for -ar verb in the "ellos" form

-aron

Ending for -er/-ir verb in the "yo" form

-í

Ending for -er/-ir verb in the "tu" form

-iste

Ending for -er/-ir verb in the "el" form

 -ió

Ending for -er/-ir verb in the "nosotros" form

-imos

Ending for -er/-ir in the "ellos" form

-ieron

Conjugate "tener" in the "el"

 Tuvo

Conjugate "andar" in the "ellos" form

anduveron

 Conjugate "comer" in the "nosotros" form

comimos

Conjugate "trotar" in the "yo" form

troté

 Conjugate "estar" in the "el" form

 estuvo

Conjugate "poder" in the "ellos" form

pudieron

 Conjugate "hacer" in the "tu" form

 haciste

When is the preterite used

There is a definite starting and stopping point to the action

Conjugate "ser" in the "nosotros" form

 fuimos

 Translate: "I bothered my brother last night."

 Molesté mi hermano anoche.