	N 	
  C12   
  C11 	
    P 	
  O13 	
  O14 	
  O11 	
  O12 	
   C1 	
   C2 	
  O21 	
  C21 	
  O22 	
  C22 	
   C3 	
  O31 	
  C31 	
  O32 	
  C32 	
  C23 	
  C24 	
  C25 		
  C26 	
  C27 	
  C28 	
  C29 	
 C210 	
 C211 	
 C212
 C213
 C214
  C33 	
  C34 	
  C35		 
  C36	
  C37	
  C38	
  C39	
 C310	
 C311	
 C312
 C313
 C314
