i-v iii iin iio iir iis iki ikk iko ikr iks ikv in- ini ink inn ino inr ins inv iny io- ioi ion ioo ior ios iov ir- iri irk irn iro irr irs irv iry is- isi isk isn iso isr iss isv isy ivi ivo ivr ivs ivv ivy iyo iyr iys iyy kii kik kin kio kir kis kiv kki kkk kkn kkr kks kkv kky kn- kni knk knn kno knr koi kok kon koo kor kos koy kri krk krn kro krr krs krv kry ksi ksk ksn kso ksr kss ksv kvi kvk kvn kvo kvr kvs kvv kyn kyo kyr kys n-i nii nik nin nio nir nis niv nki nkk nkn nko nkr nks nky nni nnk nnn nno nns nnv no- noi nok non noo nor nos nov noy nri nrk nrn nro nrr nrs nrv nry nsi nsk nsn nso nsr nss nsv nsy nvi nvk nvn nvv nyk nyn nyo nys nyy o-i oii oik oin oio oir ois oiv oki okk oko okr oks on- oni onk onn ono onr ons ony oo- ooi ook oon ooo oor oos oov or- ori ork orn oro orr ors orv ory os- osi osk osn oso osr oss osv ov- ovi ovo ovs ovv oyi oyo oys rii rik rin rio rir ris riv riy rkk rko rks rkv rky rni rnn rno rnr rns rnv rny roi rok ron roo ror ros rov roy rri rrk rrn rrr rrs rsi rsk rsn rso rsr rss rsv rvi rvn rvo rvr rvs rvv rvy ry- ryk ryn ryo ryr rys ryy sii sik sin sio sir sis siv sk- ski skk sko skr sks sky sni snk snn sno snr sns snv sny soi sok son soo sor sos sov soy sr- sri srk srn sro srr srs srv sry ss- ssi ssk ssn sso ssr sss ssv svi svk svn svo svr svs svv svy sy- syi syk syn syr sys vi- vii vik vin vio vir vis viv viy vn- vni vno vnr vns vnv voi vok von voo vor vos vov voy vri vrk vrn vrr vrs vry vsi vsk vsn vso vsr vss vsv vvi vvo vvr vvs vvv vyn yii yin yio yir yis yki ykk ykn ynk ynn yns yny yoi yok yon yoo yor yos yoy yrn yro yrs ysi ysk yso ysr yss ysy yvi yvo yvr yvy yys yyy