a-a a-b a-i aaa aab aad aai aak aan aao aar aav ab- aba abb abd abi abk abn abo abr abv ad- ada adb add adi adk adn ado adr adv ai- aia aib aid aii aik ain aio air aiv aka akb akd aki akk akn ako akr akv an- ana anb and ani ank ann ano anr anv aoa aob aod aoi aok aon aoo aor aov ar- ara arb ard ari ark arn aro arr arv av- ava avb avd avi avk avn avo avr baa bab bad bai bak ban bao bar bav bba bbb bbd bbi bbk bbn bbo bbr bda bdb bdd bdi bdk bdo bdr bdv bi- bia bib bid bii bik bin bio bir biv bka bkb bkk bkn bko bkr bkv bna bnb bnd bni bnk bnn bno bnr bnv boa bob bod boi bok bon boo bor bov bra brb brd bri brk brn bro brr brv bva bvb bvd bvi bvk bvn bvo bvr bvv daa dab dad dai dak dan dao dar dav dba dbb dbd dbi dbk dbn dbo dbr dbv dda ddb ddd ddi ddk ddn ddo ddr di- dia dib did dii dik din dio dir div dka dkb dki dkk dko dkr dna dnb dnd dni dnk dnn dno dnr doa dob dod doi dok don doo dor dov dra drb drd dri drk drn dro drr drv dva dvb dvd dvi dvk dvn dvr i-d i-v ia- iaa iab iad iai ian iao iar iav iba ibb ibd ibi ibk ibn ibo ibr ibv ida idb idd idi idk idn ido idr idv iia iib iid iii iin iio iir ika ikb iki ikk iko ikr ikv in- ina inb ind ini ink inn ino inr inv io- ioa iob iod ioi ion ioo ior iov ir- ira irb ird iri irk irn iro irr irv iva ivb ivd ivi ivo ivr ivv ka- kaa kab kad kai kak kan kao kar kav kba kbb kbd kbi kbk kbn kbo kbr kda kdb kdk kdo kdr kia kib kid kii kik kin kio kir kiv kkb kki kkk kkn kkr kkv kn- kna knd kni knk knn kno knr koa kob kod koi kok kon koo kor kra krd kri krk krn kro krr krv kva kvb kvi kvk kvn kvo kvr kvv n-i naa nab nad nai nak nan nao nar nav nba nbb nbd nbi nbk nbn nbo nbr nbv nda ndb ndd ndi ndk ndn ndo ndr ndv nia nib nid nii nik nin nio nir niv nka nki nkk nkn nko nkr nna nnb nni nnk nnn nno nnv no- noa nob nod noi nok non noo nor nov nra nrb nrd nri nrk nrn nro nrr nrv nva nvb nvd nvi nvk nvn nvv o-i oaa oab oad oai oak oan oao oar oav ob- oba obb obd obi obk obn obo obr obv oda odb odd odi odn odo odr odv oia oib oid oii oik oin oio oir oiv oka okb okd oki okk oko okr on- ona onb ond oni onk onn ono onr oo- ooa oob ood ooi ook oon ooo oor oov or- ora orb ord ori ork orn oro orr orv ov- ova ovb ovd ovi ovo ovv ra- raa rab rad rai rak ran rao rar rav rba rbb rbd rbi rbk rbn rbo rbr rda rdb rdd rdi rdn rdo rdr rdv ria rib rid rii rik rin rio rir riv rkb rkk rko rkv rna rnb rnd rni rnn rno rnr rnv roa rob rod roi rok ron roo ror rov rra rrb rrd rri rrk rrn rrr rva rvb rvd rvi rvn rvo rvr rvv v-a vaa vab vad vai vak van vao var vav vba vbd vbi vbk vbo vbr vbv vdb vdd vdi vdk vdo vdr vdv vi- via vib vid vii vik vin vio vir viv vka vkb vn- vna vnd vni vno vnr vnv voa vob vod voi vok von voo vor vov vra vrb vrd vri vrk vrn vrr vva vvb vvi vvo vvr vvv