nig nii nik nil nin nio nir nka nkc nki nkk nkn nko nkr nla nlb nlc nld nlg nli nlk nll nln nlo nlr nna nnb nnc nng nni nnk nnl nnn nno no- noa nob noc nod nog noi nok nol non noo nor nra nrb nrc nrd nrg nri nrk nrl nrn nro nrr o-i oaa oab oac oad oag oai oak oal oan oao oar ob- oba obb obc obd obg obi obk obl obn obo obr oc- oca ocb occ ocd ocg oci ock ocl ocn oco ocr oda odb odc odd odg odi odl odn odo odr oga ogc ogd ogg ogi ogl ogn ogo oia oib oic oid oii oik oil oin oio oir oka okb okc okd okg oki okk okl oko okr ola olb olc old olg oli olk oll oln olo on- ona onb onc ond ong oni onk onl onn ono onr oo- ooa oob ooc ood oog ooi ook ool oon ooo oor or- ora orb orc ord org ori ork orl orn oro orr ra- raa rab rac rad rag rai rak ral ran rao rar rba rbb rbc rbd rbg rbi rbk rbl rbn rbo rbr rca rcb rcc rcd rcg rci rcl rcn rco rcr rda rdb rdc rdd rdg rdi rdl rdn rdo rdr rga rgb rgc rgd rgg rgi rgk rgn rgo rgr ria rib ric rid rig rii rik ril rin rio rir rkb rkc rkg rkk rko rla rlc rld rlg rli rll rln rlo rlr rna rnb rnc rnd rng rni rnn rno rnr roa rob roc rod rog roi rok rol ron roo ror rra rrb rrc rrd rrg rri rrk rrl rrn rrr