escribir = to write

yo escribo / nosotros escribimos
I write / we write

tú (informal)escribes / vosotros escribís
you write / all of you (informal) write

usted escribe / ustedes escriben
you (formal) write / all of you write

él escribe / ellos escriben
he writes / they write

ella escribe / ellas escriben
she writes / they (females)write

The regular pattern ir verbs have similar endings to the er verbs except in the nosotros and vosotros forms. Be careful when you are conjugating these verbs. Thank goodness they are the least frequent.

Los verbos regulares que terminan en ir - vocabulario

escribir - to write
recibir - to receive
asistir - to assist
existir - to exist
salir - to leave (yo salgo)
decir - to to say (yo digo)