Author: aford
Company: NAFCS

Present Progressive Irregular Participles
Creer becomes | Creyendo
Leer becomes | Leyendo
Ir becomes | Yendo
Destruir becomes | Destruyendo
Incluir becomes | Incluyendo
Oír becomes | Oyendo
Traer becomes | Trayendo
Caerse (a reflexive verb) becomes | Cayéndose

This next group of Spanish irregulars are stem changers and change from “o” to “u”. 
Morir becomes | Muriendo
Dormir becomes | Durmiendo

This final group of irregulars are also stem changers and change from “e” to “i”.
Pedir becomes | Pidiendo
Seguir becomes | Siguiendo
Conseguir becomes | Consiguiendo
Repetir becomes | Repitiendo
Servir becomes | Sirviendo
Sentir becomes | Sintiendo
Preferir becomes | Prefiriendo
Requerir becomes | Requiriendo
Venir becomes | Viniendo
Decir becomes | Diciendo

And now a few reflexives in the same group:
Vestirse becomes | Vistiéndose
Despedirse becomes | Despidiéndose
Sentirse becomes | Sintiéndose
Divertirse becomes | Divirtiéndose