iii iin iio iir iis iki ikk iko ikr iks in- ini ink inn ino inr ins io- ioi ion ioo ior ios ir- iri irk irn iro irr irs is- isi isk isn iso isr iss kii kik kin kio kir kis kki kkk kkn kkr kks kn- kni knk knn kno knr koi kok kon koo kor kos kri krk krn kro krr krs ksi ksk ksn kso ksr kss n-i nii nik nin nio nir nis nki nkk nkn nko nkr nks nni nnk nnn nno nns no- noi nok non noo nor nos nri nrk nrn nro nrr nrs nsi nsk nsn nso nsr nss o-i oii oik oin oio oir ois oki okk oko okr oks on- oni onk onn ono onr ons oo- ooi ook oon ooo oor oos or- ori ork orn oro orr ors os- osi osk osn oso osr oss rii rik rin rio rir ris rkk rko rks rni rnn rno rnr rns roi rok ron roo ror ros rri rrk rrn rrr rrs rsi rsk rsn rso rsr rss sii sik sin sio sir sis sk- ski skk sko skr sks sni snk snn sno snr sns soi sok son soo sor sos sr- sri srk srn sro srr srs ss- ssi ssk ssn sso ssr sss