foundation    urufatiro, iremezo, itanguriro
En-En dictionary 
itanguriro (ama-)     5  class 5
singular: i-,iri-
plural: ama-
  
beginning, foundation
iremezo     3  class 3
singular: i-,in-
  
(no pl.) 1. leader, one to be imitated, 2. beginning, foundation, 3. principle
urufatiro (im-)     6  class 6
singular: uru-
plural: in-
  
1. foundation, 2. principle