k-t kkk kkn kkr kks kkt kn- knk knn kno knr knt kok kon koo kor kos kot krk krn kro krr krs krt ksk ksn kso ksr kss kst ktk ktn kto ktr kts ktt nkk nkn nko nkr nks nkt nnk nnn nno nns nnt no- nok non noo nor nos not nrk nrn nro nrr nrs nrt nsk nsn nso nsr nss nst ntk ntn nto ntr nts ntt okk oko okr oks on- onk onn ono onr ons ont oo- ook oon ooo oor oos oot or- ork orn oro orr ors ort os- osk osn oso osr oss ost ot- otk otn oto otr ots ott rkk rko rks rkt rnn rno rnr rns rnt rok ron roo ror ros rot rrk rrn rrr rrs rrt rsk rsn rso rsr rss rst rtk rtn rto rtr rts rtt sk- skk sko skr sks skt snk snn sno snr sns snt sok son soo sor sos sot sr- srk srn sro srr srs srt ss- ssk ssn sso ssr sss sst stk stn sto str sts stt tkk tko tkr tks tkt tnk tnn tno tnr tns tnt to- tok ton too tor tos tot trk trn tro trr trs trt tsk tsn tso tsr tss tst ttk ttn tto ttr tts ttt