In e > ie stem changing verbs, the last 'e' in the stem changes to 'ie' in all conjugations except nosotros and vosotros.
| Tense | Yo | Tú | Él /<br>Ella /<br>Usted | Nosotros /<br>Nosotras | Vosotros /<br>Vosotras | Ellos /<br>Ellas /<br>Ustedes |
|---|---|---|---|---|---|---|
| Present | piens- | piens- | piens- | pens- | pens- | piens- |