nbg nbi nbn nbo nbr nca ncb ncc ncd nce ncf ncg nci ncn nco ncr nda ndb ndc ndd nde ndf ndg ndi ndn ndo ndr ne- nea neb nec ned nee nef neg nei nen neo ner nfa nfb nfc nfd nfe nff nfi nfn nfo nfr nga ngb ngc ngd nge ngf ngg ngi ngn ngo nia nib nic nid nie nif nig nii nin nio nir nna nnb nnc nne nnf nng nni nnn nno no- noa nob noc nod noe nof nog noi non noo nor nra nrb nrc nrd nre nrf nrg nri nrn nro nrr o-i oaa oab oac oad oae oaf oag oai oan oao oar ob- oba obb obc obd obe obf obg obi obn obo obr oc- oca ocb occ ocd ocf ocg oci ocn oco ocr oda odb odc odd ode odf odg odi odn odo odr oea oeb oec oed oee oef oeg oei oen oeo oer of- ofa ofb ofc ofd ofe off ofg ofi ofn ofo ofr oga ogc ogd oge ogf ogg ogi ogn ogo oia oib oic oid oie oif oii oin oio oir on- ona onb onc ond one onf ong oni onn ono onr oo- ooa oob ooc ood oof oog ooi oon ooo oor or- ora orb orc ord ore orf org ori orn oro orr ra- raa rab rac rad rae raf rag rai ran rao rar rba rbb rbc rbd rbe rbf rbg rbi rbn rbo rbr rca rcb rcc rcd rce rcf rcg rci rcn rco rcr rda rdb rdc rdd rde rdf rdg rdi rdn rdo rdr re- rea reb rec red ree ref reg rei ren reo rer rfa rfb rfc rfd rfe rff rfg rfi rfn rfo rfr rga rgb rgc rgd rge rgf rgg rgi rgn rgo rgr ria rib ric rid rie rif rig rii rin rio rir rna rnb rnc rnd rng rni rnn rno rnr roa rob roc rod roe rof rog roi ron roo ror rra rrb rrc rrd rrf rrg rri rrn rrr