i-v iii iin iio iir iis iki ikk iko ikr iks ikv in- ini ink inn ino inr ins inv io- ioi ion ioo ior ios iov ir- iri irk irn iro irr irs irv is- isi isk isn iso isr iss isv ivi ivo ivr ivs ivv kii kik kin kio kir kis kiv kki kkk kkn kkr kks kkv kn- kni knk knn kno knr koi kok kon koo kor kos kri krk krn kro krr krs krv ksi ksk ksn kso ksr kss ksv kvi kvk kvn kvo kvr kvs kvv n-i nii nik nin nio nir nis niv nki nkk nkn nko nkr nks nni nnk nnn nno nns nnv no- noi nok non noo nor nos nov nri nrk nrn nro nrr nrs nrv nsi nsk nsn nso nsr nss nsv nvi nvk nvn nvv o-i oii oik oin oio oir ois oiv oki okk oko okr oks on- oni onk onn ono onr ons oo- ooi ook oon ooo oor oos oov or- ori ork orn oro orr ors orv os- osi osk osn oso osr oss osv ov- ovi ovo ovs ovv rii rik rin rio rir ris riv rkk rko rks rkv rni rnn rno rnr rns rnv roi rok ron roo ror ros rov rri rrk rrn rrr rrs rsi rsk rsn rso rsr rss rsv rvi rvn rvo rvr rvs rvv sii sik sin sio sir sis siv sk- ski skk sko skr sks sni snk snn sno snr sns snv soi sok son soo sor sos sov sr- sri srk srn sro srr srs srv ss- ssi ssk ssn sso ssr sss ssv svi svk svn svo svr svs svv vi- vii vik vin vio vir vis viv vn- vni vno vnr vns vnv voi vok von voo vor vos vov vri vrk vrn vrr vrs vsi vsk vsn vso vsr vss vsv vvi vvo vvr vvs vvv