akanwa (utu-)     7  class 7
singular: aka-,aga-
plural: utu-,udu-
  
mouth
urusakanwa (in-)     6  class 6
singular: uru-
plural: in-
  
chin
chin    urwasakusaku, urusakanwa, igwasakusaku
En-En dictionary 
mouth    akanwa
(big, many) amanwa
(person whose mouth is very dry) umwūnwa
(to burn in, smart in) gukera
(to cover the mouth of another with hand to keep him from making a sound) gupfūnda
(to open) gutēranura umunwa, kwāsama
(to put in the ~ of) gutamika
(to rinse the) kwīyugunyura, kwīnyugunura
En-En dictionary 
oral cavity   akanwa
En-En dictionary