ngg ngk ngl ngn ngo nka nkc nke nkk nkn nko nkr nla nlb nlc nld nle nlg nlk nll nln nlo nlr nna nnb nnc nne nng nnk nnl nnn nno no- noa nob noc nod noe nog nok nol non noo nor nra nrb nrc nrd nre nrg nrk nrl nrn nro nrr oaa oab oac oad oae oag oak oal oan oao oar ob- oba obb obc obd obe obg obk obl obn obo obr oc- oca ocb occ ocd ocg ock ocl ocn oco ocr oda odb odc odd ode odg odl odn odo odr oea oeb oec oed oee oeg oel oen oeo oer oga ogc ogd oge ogg ogl ogn ogo oka okb okc okd oke okg okk okl oko okr ola olb olc old ole olg olk oll oln olo on- ona onb onc ond one ong onk onl onn ono onr oo- ooa oob ooc ood oog ook ool oon ooo oor or- ora orb orc ord ore org ork orl orn oro orr ra- raa rab rac rad rae rag rak ral ran rao rar rba rbb rbc rbd rbe rbg rbk rbl rbn rbo rbr rca rcb rcc rcd rce rcg rcl rcn rco rcr rda rdb rdc rdd rde rdg rdl rdn rdo rdr re- rea reb rec red ree reg rek rel ren reo rer rga rgb rgc rgd rge rgg rgk rgn rgo rgr rkb rkc rke rkg rkk rko rla rlc rld rle rlg rll rln rlo rlr rna rnb rnc rnd rng rnn rno rnr roa rob roc rod roe rog rok rol ron roo ror rra rrb rrc rrd rrg rrk rrl rrn rrr