nbb nbc nbd nbg nbi nbl nbm nbn nbo nbr nca ncb ncc ncd ncg nci ncl ncm ncn nco ncr nda ndb ndc ndd ndg ndi ndl ndm ndn ndo ndr nga ngb ngc ngd ngg ngi ngl ngm ngn ngo nia nib nic nid nig nii nil nim nin nio nir nla nlb nlc nld nlg nli nll nlm nln nlo nlr nma nmb nmc nmd nmg nmi nml nmm nmn nmo nmr nna nnb nnc nng nni nnl nnm nnn nno no- noa nob noc nod nog noi nol nom non noo nor nra nrb nrc nrd nrg nri nrl nrm nrn nro nrr o-i oaa oab oac oad oag oai oal oam oan oao oar ob- oba obb obc obd obg obi obl obm obn obo obr oc- oca ocb occ ocd ocg oci ocl ocm ocn oco ocr oda odb odc odd odg odi odl odm odn odo odr oga ogc ogd ogg ogi ogl ogn ogo oia oib oic oid oii oil oim oin oio oir ola olb olc old olg oli oll olm oln olo om- oma omb omc omd omg omi oml omm omn omo omr on- ona onb onc ond ong oni onl onn ono onr oo- ooa oob ooc ood oog ooi ool oom oon ooo oor or- ora orb orc ord org ori orl orm orn oro orr ra- raa rab rac rad rag rai ral ram ran rao rar rba rbb rbc rbd rbg rbi rbl rbm rbn rbo rbr rca rcb rcc rcd rcg rci rcl rcm rcn rco rcr rda rdb rdc rdd rdg rdi rdl rdm rdn rdo rdr rga rgb rgc rgd rgg rgi rgn rgo rgr ria rib ric rid rig rii ril rim rin rio rir rla rlc rld rlg rli rll rlm rln rlo rlr rma rmb rmc rmd rmg rmi rml rmm rmn rmo rmr rna rnb rnc rnd rng rni rnm rnn rno rnr roa rob roc rod rog roi rol rom ron roo ror rra rrb rrc rrd rrg rri rrl rrm rrn rrr