a-a a-b a-i aaa aab aae aai aak aan aao aap aav ab- aba abb abe abi abk abn abo abp abv aea aeb aee aei aek aen aeo aep aev ai- aia aib aie aii aik ain aio aip aiv aka akb ake aki akk akn ako akp akv an- ana anb ane ani ank ann ano anp anv aoa aob aoe aoi aok aon aoo aop aov ap- apa apb ape api apk apn apo app apv av- ava avb ave avi avk avn avo avp b-p baa bab bae bai bak ban bao bap bav bba bbb bbe bbi bbk bbn bbo bbp be- bea beb bee bei bek ben beo bep bev bi- bia bib bie bii bik bin bio bip biv bka bkb bke bkk bkn bko bkp bkv bna bnb bne bni bnk bnn bno bnp bnv boa bob boe boi bok bon boo bop bov bpa bpb bpe bpi bpn bpo bpp bpv bva bvb bve bvi bvk bvn bvo bvp bvv eaa eab eae eai eak ean eao eap eav eba ebb ebe ebi ebk ebn ebo ebp ebv eea eeb eee eek een eeo eep eev eia eib eie eii eik ein eio eip eiv eka ekb eke eki eko ekp ekv en- ena enb ene eni enk enn eno enp env eo- eoa eob eoe eoi eok eon eoo eop ep- epa epb epe epi epn epo epp eva evb eve evi evn evo evp evv i-v ia- iaa iab iae iai ian iao iap iav iba ibb ibe ibi ibk ibn ibo ibp ibv ie- iea iee iei iek ien iep iev iia iib iie iii iin iio iip ika ikb ike iki ikk iko ikv in- ina inb ine ini ink inn ino inp inv io- ioa iob ioe ioi ion ioo iop iov ipa ipb ipe ipi ipn ipo ipp ipv iva ivb ive ivi ivo ivp ivv ka- kaa kab kae kai kak kan kao kap kav kba kbb kbe kbi kbk kbn kbo kbp ke- kea keb kee kei kek ken keo kep kev kia kib kie kii kik kin kio kip kiv kkb kke kki kkk kkn kkp kkv kn- kna kne kni knk knn kno knp koa kob koe koi kok kon koo kop kpa kpe kpi kpk kpn kpo kpp kpv kva kvb kvi kvk kvn kvo kvp kvv n-i naa nab nae nai nak nan nao nap nav nba nbb nbe nbi nbk nbn nbo nbp nbv ne- nea neb nee nei nek nen neo nep nev nia nib nie nii nik nin nio nip niv nka nke nki nkk nkn nko nkp nna nnb nne nni nnk nnn nno nnp nnv no- noa nob noe noi nok non noo nop nov npa npb npe npi npn npo npp npv nva nvb nve nvi nvk nvn nvp nvv o-i oaa oab oae oai oak oan oao oap oav ob- oba obb obe obi obk obn obo obp obv oea oeb oee oei oen oeo oep oia oib oie oii oik oin oio oip oiv oka okb oke oki okk oko okp on- ona onb one oni onk onn ono onp oo- ooa oob ooi ook oon ooo oop oov op- opa opb ope opi opk opn opo opp opv ov- ova ovb ove ovi ovo ovp ovv p-p paa pab pae pai pak pan pao pap pav pba pbb pbe pbi pbk pbn pbo pbp pea peb pee pei pek pen peo pep pev pia pib pie pii pik pin pio pip piv pka pkb pke pki pkn pko pkp pn- pna pnb pne pni pnk pnn pno pnp pnv poa pob poe poi pok pon poo pop pov ppa ppb ppe ppi ppk ppn ppo ppp ppv pva pvb pve pvi pvk pvn pvo pvp pvv v-a v-e vaa vab vae vai vak van vao vap vav vba vbi vbk vbo vbv vea veb vee vei vek ven veo vep vi- via vib vie vii vik vin vio vip viv vka vkb vkp vn- vna vni vno vnp vnv voa vob voe voi vok von voo vop vov vpa vpb vpe vpi vpk vpn vpo vpp vva vvb vvi vvo vvv