iii iin iio iip iis iit iki ikk iko iks ikt in- ini ink inn ino inp ins int io- ioi ion ioo iop ios iot ipi ipn ipo ipp ips ipt is- isi isk isn iso isp iss ist iti itk itn ito itp its itt k-t kii kik kin kio kip kis kit kki kkk kkn kkp kks kkt kn- kni knk knn kno knp knt koi kok kon koo kop kos kot kpi kpk kpn kpo kpp kps kpt ksi ksk ksn kso ksp kss kst ktk ktn kto ktp kts ktt n-i nii nik nin nio nip nis nit nki nkk nkn nko nkp nks nkt nni nnk nnn nno nnp nns nnt no- noi nok non noo nop nos not npi npn npo npp nps npt nsi nsk nsn nso nsp nss nst nti ntk ntn nto ntp nts ntt o-i oii oik oin oio oip ois oit oki okk oko okp oks on- oni onk onn ono onp ons ont oo- ooi ook oon ooo oop oos oot op- opi opk opn opo opp ops opt os- osi osk osn oso osp oss ost ot- oti otk otn oto otp ots ott p-p pii pik pin pio pip pis pit pki pkn pko pkp pks pkt pn- pni pnk pnn pno pnp pns pnt poi pok pon poo pop pos pot ppi ppk ppn ppo ppp pps ppt ps- psi psk psn pso psp pss pst pt- pti ptk ptn pto ptp pts ptt sii sik sin sio sip sis sit sk- ski skk sko skp sks skt sni snk snn sno snp sns snt soi sok son soo sop sos sot spi spk spn spo spp sps spt ss- ssi ssk ssn sso ssp sss sst sti stk stn sto stp sts stt tii tik tin tio tip tis tit tkk tko tkp tks tkt tni tnk tnn tno tnp tns tnt to- toi tok ton too top tos tot tpi tpk tpn tpo tpp tps tpt tsi tsk tsn tso tsp tss tst tti ttk ttn tto ttp tts ttt