The verbs cerrar (to close) and entender (to understand) are irregular in the present tense. When conjugated, (e) changes to (ie) (with the exception of nostoros and vosotros).

The congugation of the verbs cerrar and perder is shown in the table below.

cerrar perder

			

				
 
				
cerrar
				
perder
			
			

				
yo
				
  cierro
				
  pierdo
			
			

				
tú
				
 cierras
				
 pierdes
			
			

				
Ud./él/ella
				
 cierra
				
 pierde
			
			

				
nosotros (as)
				
 cerramos
				
 perdemos
			
			

				
vosotros (as)
				
 cerráis
				
 perdéis
			
			

				
Uds./ellos/ellas
				
 cierran
				
 pierden
			
		

The verbs entender (to understand) and pensar (to think) are irregular and follow the same patren as the verbs above. In the present tense, (e) changes to (ie) (with the exception of nostoros and vosotros).

The congugation of the verbs entender and pensar is shown in the table below.

entender pensar

			

				
 
				
entender
				
pensar
			
			

				
yo
				
  entiendo
				
  pienso
			
			

				
tú
				
 entiendes
				
 piensas
			
			

				
Ud./él/ella
				
 entiende
				
 piensa
			
			

				
nosotros (as)
				
 entendemos
				
 pensamos
			
			

				
vosotros (as)
				
 entendéis
				
 pensáis
			
			

				
Uds./ellos/ellas
				
 entienden
				
 piensan
			
		

Note: yo = I, tú = you (informal), usted (Ud.) = you (formal),
él = he, ella = she, nosotros = we (males), nosotras = we
(females), vosotros = you guys (informal, males), vosotras = 
you guys (informal, females),  ellos = they (males), ellas = 
they (females), ustedes (Uds.) = you all (formal)

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