1.  e - i

2. Pedir PidoPedimos Pides Pidepiden Facts for stem-changing verbs: The conjugations are the same as any –ar, -er, or –ir verb The part that stem-changes is the second syllable from the right. It affects just the boot, not the nosotros. There is no pattern. There are 3 types of stem-changes: o – ue, e – i, and e - ie

3. Servir SirvoServimos Sirves SirveSirven Repetir RepitoRepetimos Repites RepiteRepiten

4. Reír RíoReímos Ríes RíeRíen

5. In general, if a verb is embedded in another verb, it will conjugate the same. For example: Mantener MantengoMantenemos Mantienes MantieneMantienen

6. Despedir DespidoDespedimos Despides DespideDespiden Sonreír SonríoSonreímos Sonríes SonríeSonríen