nkt nlb nlc nld nle nlg nli nlk nll nln nlo nlt nnb nnc nne nng nni nnk nnl nnn nno nnt no- nob noc nod noe nog noi nok nol non noo not ntb ntc ntd nte ntg nti ntk ntn nto ntt o-i ob- obb obc obd obe obg obi obk obl obn obo obt oc- ocb occ ocd ocg oci ock ocl ocn oco oct odb odc odd ode odg odi odl odn odo odt oeb oec oed oee oeg oei oel oen oeo oet ogc ogd oge ogg ogi ogl ogn ogo ogt oib oic oid oie oii oik oil oin oio oit okb okc okd oke okg oki okk okl oko olb olc old ole olg oli olk oll oln olo olt on- onb onc ond one ong oni onk onl onn ono ont oo- oob ooc ood oog ooi ook ool oon ooo oot ot- otb otc otd ote otg oti otk otl otn oto ott tbb tbc tbd tbe tbg tbi tbk tbl tbn tbo tbt tcb tcc tcd tce tcg tci tck tcl tcn tco tct tdb tdc tdd tde tdg tdi tdk tdl tdn tdo tdt te- teb tec ted tee teg tei tek tel ten teo tet tgb tgc tge tgg tgi tgk tgl tgn tgo tgt tib tic tid tie tig tii tik til tin tio tit tkb tkc tke tkg tkk tkl tko tkt tlc tld tle tlg tli tlk tll tln tlo tlt tnb tnc tnd tne tng tni tnk tnl tnn tno tnt to- tob toc tod toe tog toi tok tol ton too tot ttb ttc ttd tte ttg tti ttk ttl ttn tto ttt