a-a a-b a-i aaa aab aai aak aan aao aap aas aav ab- aba abb abi abk abn abo abp abs abv ai- aia aib aii aik ain aio aip ais aiv aka akb aki akk akn ako akp aks akv an- ana anb ani ank ann ano anp ans anv aoa aob aoi aok aon aoo aop aos aov ap- apa apb api apk apn apo app aps apv as- asa asb asi ask asn aso asp ass asv av- ava avb avi avk avn avo avp avs b-p baa bab bai bak ban bao bap bas bav bba bbb bbi bbk bbn bbo bbp bbs bi- bia bib bii bik bin bio bip bis biv bka bkb bkk bkn bko bkp bks bkv bna bnb bni bnk bnn bno bnp bns bnv boa bob boi bok bon boo bop bos bov bpa bpb bpi bpn bpo bpp bps bpv bsa bsb bsi bsk bsn bso bsp bss bsv bva bvb bvi bvk bvn bvo bvp bvs bvv i-v ia- iaa iab iai ian iao iap ias iav iba ibb ibi ibk ibn ibo ibp ibs ibv iia iib iii iin iio iip iis ika ikb iki ikk iko iks ikv in- ina inb ini ink inn ino inp ins inv io- ioa iob ioi ion ioo iop ios iov ipa ipb ipi ipn ipo ipp ips ipv is- isa isb isi isk isn iso isp iss isv iva ivb ivi ivo ivp ivs ivv ka- kaa kab kai kak kan kao kap kas kav kba kbb kbi kbk kbn kbo kbp kbs kia kib kii kik kin kio kip kis kiv kkb kki kkk kkn kkp kks kkv kn- kna kni knk knn kno knp koa kob koi kok kon koo kop kos kpa kpi kpk kpn kpo kpp kps kpv ksa ksb ksi ksk ksn kso ksp kss ksv kva kvb kvi kvk kvn kvo kvp kvs kvv n-i naa nab nai nak nan nao nap nas nav nba nbb nbi nbk nbn nbo nbp nbs nbv nia nib nii nik nin nio nip nis niv nka nki nkk nkn nko nkp nks nna nnb nni nnk nnn nno nnp nns nnv no- noa nob noi nok non noo nop nos nov npa npb npi npn npo npp nps npv nsa nsb nsi nsk nsn nso nsp nss nsv nva nvb nvi nvk nvn nvp nvv o-i oaa oab oai oak oan oao oap oas oav ob- oba obb obi obk obn obo obp obs obv oia oib oii oik oin oio oip ois oiv oka okb oki okk oko okp oks on- ona onb oni onk onn ono onp ons oo- ooa oob ooi ook oon ooo oop oos oov op- opa opb opi opk opn opo opp ops opv os- osa osb osi osk osn oso osp oss osv ov- ova ovb ovi ovo ovp ovs ovv p-p paa pab pai pak pan pao pap pas pav pba pbb pbi pbk pbn pbo pbp pbs pia pib pii pik pin pio pip pis piv pka pkb pki pkn pko pkp pks pn- pna pnb pni pnk pnn pno pnp pns pnv poa pob poi pok pon poo pop pos pov ppa ppb ppi ppk ppn ppo ppp pps ppv ps- psa psb psi psk psn pso psp pss psv pva pvb pvi pvk pvn pvo pvp pvs pvv saa sab sai sak san sao sap sas sav sba sbb sbi sbk sbn sbo sbp sbs sbv sia sib sii sik sin sio sip sis siv sk- ska skb ski skk sko skp sks sna snb sni snk snn sno snp sns snv soa sob soi sok son soo sop sos sov spa spb spi spk spn spo spp sps spv ss- ssa ssb ssi ssk ssn sso ssp sss ssv sva svb svi svk svn svo svp svs svv v-a vaa vab vai vak van vao vap vas vav vba vbi vbk vbo vbs vbv vi- via vib vii vik vin vio vip vis viv vka vkb vkp vn- vna vni vno vnp vns vnv voa vob voi vok von voo vop vos vov vpa vpb vpi vpk vpn vpo vpp vps vsa vsb vsi vsk vsn vso vsp vss vsv vva vvb vvi vvo vvs vvv