irabagu (ama-  5  class 5
singular: i-,iri-
plural: ama-
  
spot, stain
ikirabagu (ibi-)     4  class 4
singular: iki-,ic-
plural: ibi-,ivy-
  
spot, stain
spot    ibara, indome, irabagu, ikirabagu, agasembwa
(in sense of dirt) icēyi
(opposite door of house) umukōndo
En-En dictionary 
stain    irabagu, ikirabagu
En-En dictionary