a-a a-b aaa aab aad aaf aan aao aar aav ab- aba abb abd abf abn abo abr abv ad- ada adb add adf adn ado adr adv af- afa afb afd aff afn afo afr afv an- ana anb and anf ann ano anr anv aoa aob aod aof aon aoo aor aov ar- ara arb ard arf arn aro arr arv av- ava avb avd avf avn avo avr baa bab bad baf ban bao bar bav bba bbb bbd bbf bbn bbo bbr bda bdb bdd bdf bdo bdr bdv bfa bfb bfd bff bfn bfo bfr bfv bna bnb bnd bnf bnn bno bnr bnv boa bob bod bof bon boo bor bov bra brb brd brf brn bro brr brv bva bvb bvd bvn bvo bvr bvv daa dab dad daf dan dao dar dav dba dbb dbd dbf dbn dbo dbr dbv dda ddb ddd ddf ddn ddo ddr dfa dfb dfd dff dfn dfo dfr dfv dna dnb dnd dnf dnn dno dnr doa dob dod dof don doo dor dov dra drb drd drn dro drr drv dva dvb dvd dvn dvr faa fab fad faf fan fao far fav fba fbb fbd fbf fbn fbo fbr fda fdb fdd fdf fdn fdo fdr ffa ffd fff ffn ffo ffr ffv fna fnb fnd fnf fnn fnr fnv foa fob fof fon foo for fra frb frd frf frn fro frr fva fvd naa nab nad naf nan nao nar nav nba nbb nbd nbf nbn nbo nbr nbv nda ndb ndd ndf ndn ndo ndr ndv nfa nfb nfd nff nfn nfo nfr nfv nna nnb nnf nnn nno nnv no- noa nob nod nof non noo nor nov nra nrb nrd nrf nrn nro nrr nrv nva nvb nvd nvn nvv oaa oab oad oaf oan oao oar oav ob- oba obb obd obf obn obo obr obv oda odb odd odf odn odo odr odv of- ofa ofb ofd off ofn ofo ofr ofv on- ona onb ond onf onn ono onr oo- ooa oob ood oof oon ooo oor oov or- ora orb ord orf orn oro orr orv ov- ova ovb ovd ovf ovo ovv ra- raa rab rad raf ran rao rar rav rba rbb rbd rbf rbn rbo rbr rda rdb rdd rdf rdn rdo rdr rdv rfa rfb rfd rff rfn rfo rfr rfv rna rnb rnd rnn rno rnr rnv roa rob rod rof ron roo ror rov rra rrb rrd rrf rrn rrr rva rvb rvd rvf rvn rvo rvr rvv v-a vaa vab vad van vao var vav vba vbd vbo vbr vbv vdb vdd vdf vdo vdr vdv vfa vfb vfd vff vfn vfr vfv vn- vna vnd vnf vno vnr vnv voa vob vod vof von voo vor vov vra vrb vrd vrf vrn vrr vva vvb vvo vvr vvv

-ana a-do aaaa aaab aaad aaaf aaan aaar aaav aaba aabb aabd aada aafa aafb aafd aaff aana aand aaon aaoo aara aard aaro aava abaa abab abad abaf aban abar abb- abba abbb abbo abbr abda abdo abff aboa abob abod abof abon aboo abor abov abra abro abva abvd adaa adab adad adan adao adar adba adda addd addn addo addr adfa adna adob adod adon adoo ador adra adro advb afaa afad afan afao afar afdb affa affo afoa afoo afor afr- afra afro ana- anaa anab anad anan anao anar anba anbb anbo and- anda ando andr anfa anfo anna annb anno ano- anoa anod anon anor aoba aonb aono aora aorb aorn arab arad araf aran arar arba arda ardf ardo arfa arfb arff arna arnd arno aroa arob arod aron aroo aror arr- arra arro arrr arva arvn arvo avab avan avao avar avda avon avor avra avro avva avvo baaa baad baaf baan baar baba babb babo babr bada badb badd bado badr baff bafo bana band bann bano banr baon bar- bara barb bard barf barn baro barr bava bbad bbbb bbdd bbdo bbfn bd-r bdav bdna bnor bnrr boab boad boan boar boba bobb bobo boda bodb bodo bofa bofd boff bona bond bonn bono boob bood boof boon boor bor- bora bord borf born boro borr bova bovo brab brad braf bran brao brav brda brdo brna brno broa brob brod bron broo bror brrr d-bo d-na daab daad daan daar daba dabb dabo dada dado dafa daff dafo dana dand dann dano danr daon dara darb dard darf darn daro darr dava dbar dbfo dbrn dddd dfaf dffa dfrf dnaa dnab dnad dnan doab doan doar doba dobb dod- doda dodd dodo doff dona dond donn dono donr doob dood doof doon door dora dord dorf dorn doro dorr draa drab drad draf drar drba drda drna drno drob drod drof dron drra drvn dvar dvda dvdr dvfr dvno dvoa dvor dvra faaa faad faan faba fabd fabo fada fadd fado fafa faff fafo fana fand fano faon fara farb fard faro farr fava fbar fdoa ffar ffff ffrr fnar fndd fndn fndr foad foaf foan foar foba foda fofo fond fono food foof foon for- fora forb ford forn foro forr fr-v frab frad fran frob fron naaa naab naad naan naar naba nabf nabo nada nadf nadr nafa naff nafo nan- nana nanb nand nann nano naor nara nard narf narn naro narr nava navo navr navv nbaa nbad nbaf nbar nbbo nbfa ndaa ndao nddb nddo ndfa ndna ndor ndrf nfaa nfda nfff nfon nfra nndb nnnn noaa noba nobo noda nodo non- nona nonn nono noo- noob noon nooo noor noov nor- nora norb nord norf norn noro norr norv nov- nova novo nrab nrna nron nrrd nvda nvfr oafo oara obad oban obba obbo obfv obon obor obra obro odbo odda oddd odnb odon odoo odor odra odva ofan ofdr off- offa offo offr ofna ofno ofor ofra onab onan onar onda ondo onna onno onod onon onor onra ooaa ooba ooda ooff