i-v iii iin iio iip iis iit iki ikk iko iks ikt ikv in- ini ink inn ino inp ins int inv io- ioi ion ioo iop ios iot iov ipi ipn ipo ipp ips ipt ipv is- isi isk isn iso isp iss ist isv iti itk itn ito itp its itt itv ivi ivo ivp ivs ivt ivv k-t kii kik kin kio kip kis kit kiv kki kkk kkn kkp kks kkt kkv kn- kni knk knn kno knp knt koi kok kon koo kop kos kot kpi kpk kpn kpo kpp kps kpt kpv ksi ksk ksn kso ksp kss kst ksv ktk ktn kto ktp kts ktt ktv kvi kvk kvn kvo kvp kvs kvv n-i nii nik nin nio nip nis nit niv nki nkk nkn nko nkp nks nkt nni nnk nnn nno nnp nns nnt nnv no- noi nok non noo nop nos not nov npi npn npo npp nps npt npv nsi nsk nsn nso nsp nss nst nsv nti ntk ntn nto ntp nts ntt ntv nvi nvk nvn nvp nvt nvv o-i oii oik oin oio oip ois oit oiv oki okk oko okp oks on- oni onk onn ono onp ons ont oo- ooi ook oon ooo oop oos oot oov op- opi opk opn opo opp ops opt opv os- osi osk osn oso osp oss ost osv ot- oti otk otn oto otp ots ott otv ov- ovi ovo ovp ovs ovv p-p pii pik pin pio pip pis pit piv pki pkn pko pkp pks pkt pn- pni pnk pnn pno pnp pns pnt pnv poi pok pon poo pop pos pot pov ppi ppk ppn ppo ppp pps ppt ppv ps- psi psk psn pso psp pss pst psv pt- pti ptk ptn pto ptp pts ptt ptv pvi pvk pvn pvo pvp pvs pvt pvv sii sik sin sio sip sis sit siv sk- ski skk sko skp sks skt sni snk snn sno snp sns snt snv soi sok son soo sop sos sot sov spi spk spn spo spp sps spt spv ss- ssi ssk ssn sso ssp sss sst ssv sti stk stn sto stp sts stt stv svi svk svn svo svp svs svt svv tii tik tin tio tip tis tit tiv tkk tko tkp tks tkt tni tnk tnn tno tnp tns tnt to- toi tok ton too top tos tot tov tpi tpk tpn tpo tpp tps tpt tpv tsi tsk tsn tso tsp tss tst tsv tti ttk ttn tto ttp tts ttt ttv tvi tvk tvn tvo tvp tvs tvt vi- vii vik vin vio vip vis vit viv vkp vkt vn- vni vno vnp vns vnv voi vok von voo vop vos vot vov vpi vpk vpn vpo vpp vps vpt vsi vsk vsn vso vsp vss vst vsv vti vtk vto vts vtt vtv vvi vvo vvs vvt vvv