nlc nlf nlg nli nlk nll nln nlo nlr nna nnb nnc nnf nng nni nnk nnl nnn nno no- noa nob noc nof nog noi nok nol non noo nor nra nrb nrc nrf nrg nri nrk nrl nrn nro nrr o-i oaa oab oac oaf oag oai oak oal oan oao oar ob- oba obb obc obf obg obi obk obl obn obo obr oc- oca ocb occ ocf ocg oci ock ocl ocn oco ocr of- ofa ofb ofc off ofg ofi ofl ofn ofo ofr oga ogc ogf ogg ogi ogl ogn ogo oia oib oic oif oii oik oil oin oio oir oka okb okc okg oki okk okl oko okr ola olb olc olf olg oli olk oll oln olo on- ona onb onc onf ong oni onk onl onn ono onr oo- ooa oob ooc oof oog ooi ook ool oon ooo oor or- ora orb orc orf org ori ork orl orn oro orr ra- raa rab rac raf rag rai rak ral ran rao rar rba rbb rbc rbf rbg rbi rbk rbl rbn rbo rbr rca rcb rcc rcf rcg rci rcl rcn rco rcr rfa rfb rfc rff rfg rfi rfk rfl rfn rfo rfr rga rgb rgc rgf rgg rgi rgk rgn rgo rgr ria rib ric rif rig rii rik ril rin rio rir rkb rkc rkf rkg rkk rko rla rlc rlf rlg rli rll rln rlo rlr rna rnb rnc rng rni rnn rno rnr roa rob roc rof rog roi rok rol ron roo ror rra rrb rrc rrf rrg rri rrk rrl rrn rrr