iii iin iio iip iir iis iit iki ikk iko ikr iks ikt in- ini ink inn ino inp inr ins int io- ioi ion ioo iop ior ios iot ipi ipn ipo ipp ipr ips ipt ir- iri irk irn iro irp irr irs irt is- isi isk isn iso isp isr iss ist iti itk itn ito itp its itt k-t kii kik kin kio kip kir kis kit kki kkk kkn kkp kkr kks kkt kn- kni knk knn kno knp knr knt koi kok kon koo kop kor kos kot kpi kpk kpn kpo kpp kpr kps kpt kri krk krn kro krp krr krs krt ksi ksk ksn kso ksp ksr kss kst ktk ktn kto ktp ktr kts ktt n-i nii nik nin nio nip nir nis nit nki nkk nkn nko nkp nkr nks nkt nni nnk nnn nno nnp nns nnt no- noi nok non noo nop nor nos not npi npn npo npp npr nps npt nri nrk nrn nro nrp nrr nrs nrt nsi nsk nsn nso nsp nsr nss nst nti ntk ntn nto ntp ntr nts ntt o-i oii oik oin oio oip oir ois oit oki okk oko okp okr oks on- oni onk onn ono onp onr ons ont oo- ooi ook oon ooo oop oor oos oot op- opi opk opn opo opp opr ops opt or- ori ork orn oro orp orr ors ort os- osi osk osn oso osp osr oss ost ot- oti otk otn oto otp otr ots ott p-p pii pik pin pio pip pir pis pit pki pkn pko pkp pkr pks pkt pn- pni pnk pnn pno pnp pnr pns pnt poi pok pon poo pop por pos pot ppi ppk ppn ppo ppp ppr pps ppt pri prk prn pro prp prr prs prt ps- psi psk psn pso psp psr pss pst pt- pti ptk ptn pto ptp ptr pts ptt rii rik rin rio rip rir ris rit rkk rko rkp rks rkt rni rnn rno rnp rnr rns rnt roi rok ron roo rop ror ros rot rpi rpk rpn rpo rpp rpr rps rpt rri rrk rrn rrp rrr rrs rrt rsi rsk rsn rso rsp rsr rss rst rti rtk rtn rto rtp rtr rts rtt sii sik sin sio sip sir sis sit sk- ski skk sko skp skr sks skt sni snk snn sno snp snr sns snt soi sok son soo sop sor sos sot spi spk spn spo spp spr sps spt sr- sri srk srn sro srp srr srs srt ss- ssi ssk ssn sso ssp ssr sss sst sti stk stn sto stp str sts stt tii tik tin tio tip tir tis tit tkk tko tkp tkr tks tkt tni tnk tnn tno tnp tnr tns tnt to- toi tok ton too top tor tos tot tpi tpk tpn tpo tpp tpr tps tpt tri trk trn tro trp trr trs trt tsi tsk tsn tso tsp tsr tss tst tti ttk ttn tto ttp ttr tts ttt