In this first series we change the o  to ue 

Apostrar
Contar
Demostrar
Encontrar
Morder
Mostrar
Mover
Poder
Probar
Recordar
Sonar
Volver

Apuestro
Cuento
Demuestro
Encuentro
Muerdo
Muestro
Muevo  
Puedo
Puebo
Recuerdo
Sueno
Vuelvo

to bet
to count 
to demonstrate
to find
to bite
to show
to move
can, to be able
to try
to remember
to ring
to return

 

In this series we change the e to to i 

Pedir 
Repetir
Servir
Reir
Medir
Corregir
Seguir  

Pido 
Repito
Sirvo
Rio  
Mido       
Corrigo     
Sigo

 to ask for
to repeat
to serve
to laugh
to measure
to correct
to follow

In this series we change the c to zc

Conocer
Ofrecer
Producer
Conducer
Agradecer
Merecer
Compadecer

Conozco   
Ofrezco    
Produzco
Conduzco     
Agradezco Merezco Compacezco    

to know a person
to offer
to produce
to drive
to be ankful
to deserve
to pity

Here we change the e to ie

Querer
Entender
Sentir
Cerrar
Preferir
Pensar

 Quiero
Entiendo
Siento
Cierro
Prefiero
Pienso		 to want
to understand
to fall
to close
to prefer
to think

Here we change the i to y

Construir  
Concluir Destruir
Distribuir
Incluir
Excluir  

Construyo    
Concluyo  
Destruyo
Distribuyo     
Incluyo         
Excluyo        

to  build
to conclude
to destroy
to distribute
to include
to exclude

These add go to the root verb 

Tener
Venir
Decir
Poner
Salir
Hacer
Traer
Oir

Tengo
Vengo
digo  
Pongo
Salgo 
hago
trago
Oigo 

 to have
to come
to say
to put
to leave
to make
to take
to hear

 

 

 

 

 

These don't follow any rules except to confuse you. 

Ser
Dar
Saber
Ver
Hablar
Ir
Caber

 Soy
Doy
Se
Veo
Hablo
Voy
Quepo		 to be
to give
to know
to see
to speak
to go
to fit

 

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