a-a a-b a-i aaa aab aaf aag aai aao aar aau ab- aba abb abf abg abi abo abr abu af- afa afb aff afg afi afo afr afu ag- aga agb agf agg agi ago agr agu ai- aia aib aif aig aii aio air aiu aoa aob aof aog aoi aoo aor aou ar- ara arb arf arg ari aro arr aru au- aua aub auf aug aui auo aur b-u baa bab baf bag bai bao bar bau bba bbb bbf bbg bbi bbo bbr bbu bfa bfb bff bfg bfi bfo bfr bfu bga bgb bgf bgg bgi bgo bgr bgu bi- bia bib bif big bii bio bir biu boa bob bof bog boi boo bor bou bra brb brf brg bri bro brr bru bua bub buf bug bui buo bur buu faa fab faf fag fai fao far fau fba fbb fbf fbg fbi fbo fbr fbu ffa fff ffg ffi ffo ffr ffu fga fgb fgf fgg fgi fgr fia fib fif fig fii fir fiu foa fob fof fog foi foo for fou fra frb frf frg fri fro frr fru fua fub fuf fug fui fuo fur fuu gaa gab gaf gag gai gao gar gau gba gbf gbg gbi gbo gbr gbu gfa gfb gff gfi gfo gfr gga ggb ggg ggi ggo ggr ggu gia gib gif gig gii gio gir giu goa gob gof gog goi goo gor gou gra grb grf grg gri gro grr gru gu- gua gub guf gug gui guo gur guu i-f ia- iaa iab iaf iag iai iao iar iau iba ibb ibf ibg ibi ibo ibr ibu ifa ifb iff ifg ifi ifo ifr ifu iga igb igf igg igi igo igr igu iia iib iif iii iio iir iiu io- ioa iob iof iog ioi ioo ior iou ir- ira irb irf irg iri iro irr iru iu- iua iub iug iui iur o-i oaa oab oaf oag oai oao oar oau ob- oba obb obf obg obi obo obr obu of- ofa ofb off ofg ofi ofo ofr ofu oga ogf ogg ogi ogo oia oib oif oii oio oir oiu oo- ooa oob oof oog ooi ooo oor or- ora orb orf org ori oro orr oru ou- oua ouf oui ouo our ra- raa rab raf rag rai rao rar rau rba rbb rbf rbg rbi rbo rbr rbu rfa rfb rff rfg rfi rfo rfr rfu rga rgb rgf rgg rgi rgo rgr ria rib rif rig rii rio rir roa rob rof rog roi roo ror rou rra rrb rrf rrg rri rrr rru rua rub ruf rug rui ruo rur ruu ua- uaa uab uaf uag uai uao uar uau uba ubb ubf ubg ubi ubo ubr ubu ufa uff ufg ufi ufo ufr ufu uga ugb ugf ugg ugi ugo ugr ugu uia uib uif uig uii uio uir uiu uoa uob uog uoo uor ur- ura urb urf urg uri uro urr uru uua uug uur uuu

a-fu a-ii aaaa aaab aaaf aaai aaar aaba aabb aabi aafa aafb aaff aafi aaib aaii aaoo aara aari aaro aaru abaa abab abaf abag abai abar abau abb- abba abbb abbi abbo abbr abff abia abib abig abir abiu aboa abob abof aboo abor abou abra abri abro abua abuf abug afaa afao afar affa affi affo afgf afia afib afif afig afir afoa afog afoo afor afr- afra afri afro afru afua ag-o agag agai agao agar agau agba agbo agfa agga aggi aggu agia agib agig agii agio agir agob agog agoo agou agra agri agro agua agui agur aiai aiba aibo aiff aiga aigo aiia aiib aiir aioi aira airi airo aiui aoba aora aorb aouf arab araf arag arai arar arau arba arbi arfa arfb arff arfu arga argb argi argo aria arib arif arig arii ario aroa arob aroi aroo aror arr- arra arrg arri arro arrr arru arua arub arug arui auaa aufi auga augi aur- aura auri auro auug ba-i baaa baaf baar baba babb babi babo babr babu baff bafo baga bagg bagi bago baia baib baig baio bair bar- bara barb barf barg bari baro barr baru bau- bauf baug baur bbau bbbb bbga bbrg bfgf bgia biaf biao biar biba bibb bibi bibo bifa biff bifi biga bigb bigg bigo bigu bio- biog bioi biou bira birb birg biri biro birr biru boab boag boai boar boba bobb bobi bobo bobu bofa boff bofu boga bogg bogi bogo boi- boii boiu boob boof boog boor bor- bora borf borg bori boro borr boru boua bouf bour brab braf brag brai brao brau brfu bria brig brio broa brob brog broo bror brou brrr brug buar buba bubb bubi bubo bubu buff bufo bufr buga bugg bugi bugo buif buir buiu bur- bura burb burg buri buro burr buru faaa faba fabi fabo fabu fafa faff fafg fafi fafo fagg fagi fago fagu faio fair fara farb farg faro farr faru faur fbar ffar ffff ffii ffrr fiaa fiaf fiar fiba fifa fiff fifi fifo figa figg figo fiii fior fira fiua foaf foar foba fofo fogg fogi fogo foia foof for- fora forb forg fori foro forr foua foug four frab frag frau fria frib frig frio frob frog frou frub frug fuar fubb fubu fuff fufu fuga fugi fugo fugu fuig fuir fuor fur- fura furg furi furo furr gaar gaba gabb gabi gabo gabr gabu gafa gafb gaff gafi gaga gagg gagi gago gagu gaia gaig gair gaiu gara garb garf garg gari garo garr gaua gaub gaur gbag gbbo gffa gfoa gfor ggfg gggg giaa giai giba gibb giff gifu giga gigg gigi gigo giog gioi gira girg giri giro girr giru giur goaf goai goar goba gobi gobo goff gofr gofu goga gogi gogo goif goof goog gooi goor gora gorb gorf gorg gori goro gorr gou- gouf goug gour grab graf grai grau grbr grfa gria grib grif