-al -ol a-a a-b aaa aab aad aaf aal aao aar aau ab- aba abb abd abf abl abo abr abu ad- ada adb add adf adl ado adr adu af- afa afb afd aff afl afo afr afu al- ala alb ald alf all alo alr alu aoa aob aod aof aol aoo aor aou ar- ara arb ard arf arl aro arr aru au- aua aub aud auf aul auo aur b-u baa bab bad baf bal bao bar bau bba bbb bbd bbf bbl bbo bbr bbu bda bdb bdd bdf bdl bdo bdr bdu bfa bfb bfd bff bfl bfo bfr bfu bla blb bld blf bll blo blr blu boa bob bod bof bol boo bor bou bra brb brd brf brl bro brr bru bua bub bud buf bul buo bur buu daa dab dad daf dal dao dar dau dba dbb dbd dbf dbl dbo dbr dbu dda ddb ddd ddf ddl ddo ddr ddu dfa dfb dfd dff dfl dfo dfr dfu dl- dla dlb dld dlf dll dlo dlr dlu doa dob dod dof dol doo dor dou dra drb drd drl dro drr dru dua dub dud duf dul duo dur faa fab fad faf fal fao far fau fba fbb fbd fbf fbl fbo fbr fbu fda fdb fdd fdf fdl fdo fdr fdu ffa ffd fff ffl ffo ffr ffu fla flb fld flf fll flo flr flu foa fob fof fol foo for fou fra frb frd frf frl fro frr fru fua fub fud fuf ful fuo fur fuu la- laa lab lad laf lal lao lar lau lba lbb lbd lbf lbl lbo lbr lbu lda ldb ldd ldf ldl ldo ldr ldu lfa lfb lfd lff lfl lfo lfr lfu lla llb lld llf lll llo llr llu loa lob lod lof lol loo lor lou lra lrb lrd lrf lro lrr lru lua lub lud luf lul luo lur luu oaa oab oad oaf oal oao oar oau ob- oba obb obd obf obl obo obr obu oda odb odd odf odl odo odr odu of- ofa ofb ofd off ofl ofo ofr ofu ola olb old olf oll olo olu oo- ooa oob ood oof ool ooo oor or- ora orb ord orf orl oro orr oru ou- oua oud ouf oul ouo our ra- raa rab rad raf ral rao rar rau rba rbb rbd rbf rbl rbo rbr rbu rda rdb rdd rdf rdl rdo rdr rdu rfa rfb rfd rff rfl rfo rfr rfu rla rld rlf rll rlo rlr rlu roa rob rod rof rol roo ror rou rra rrb rrd rrf rrl rrr rru rua rub rud ruf ruo rur ruu ua- uaa uab uad uaf ual uao uar uau uba ubb ubf ubl ubo ubr ubu uda udb udd udf udl udo udr udu ufa ufd uff ufl ufo ufr ufu ula ulb uld ulf ull ulo ulr ulu uoa uob uod uol uoo uor ur- ura urb urd urf url uro urr uru uua uur uuu

a-do a-fu aaaa aaab aaad aaaf aaal aaar aaba aabb aabd aabl aada aadu aafa aafb aafd aaff aafl aala aald aall aalo aalu aaoo aara aard aaro aaru abaa abab abad abaf abal abar abau abb- abba abbb abbo abbr abda abdo abdu abff abla ablo aboa abob abod abof abol aboo abor abou abra abro abua abud abuf abul adaa adab adad adal adao adar adba adda addd addl addo addr addu adfa adfl adob adod adoo ador adra adro adua adub adur afaa afad afao afar afdb afdl affa affo afla afoa afol afoo afor afr- afra afro afru afua afud alaa alad alal alao alar alau alb- alba albo albu ald- alda aldl aldo alfa all- alla alll allo allr allu aloa alod alof alol aloo alor alou alro alua aluf alur aoba aola aora aorb aouf aoul arab arad araf aral arar arau arba arda ardf ardl ardo ardu arfa arfb arff arfu arla arlo aroa arob arod aroo aror arr- arra arro arrr arru arua arub arud arul auaa audo aul- aula auld aulf aull aulo aulu auol aur- aura aurd auro baaa baad baaf baal baar baba babb babo babr babu bada badb badd bado badr badu baff bafo bala bald balf ball balo balu baol bar- bara barb bard barf baro barr baru bau- baud bauf baul baur bbad bbau bbbb bbdd bbdo bblb bd-r bduf bffl blaa blab blad blau bldr blob blod bloo blou blub blud bluf blur boab boad boal boar boba bobb bobo bobu boda bodb bodo bodu bofa bofd boff bofu bola bold boll bolo bolu boob bood boof bool boor bor- bora bord borf boro borr boru boua boud bouf boul bour brab brad braf brao brau brda brdo brfu broa brob brod brol broo bror brou brrr brud buad bual buar buba bubb bubo bubu buda budb budd budl budo budu buff bufo bufr bula bulb buld bull bulu buol bur- bura burb burd burl buro burr buru d-bo daab daad daal daar daau daba dabb dabo dabu dada dado dadu dafa daff dafo dala dalf dall dalo dalu daou dara darb dard darf darl daro darr daru daub daud daur dbar dbfo dddd ddub dfaf dffa dfrf dlab dlbd doab doal doar doba dobb dobl dobu dod- doda dodd dodo doff dola dold dolf doll dolo dolu doob dood doof dool door dora dord dorf doro dorr doru doub doud douf doul dour draa drab drad draf drar drau drba drda drob drod drof drol drou drra drua drub druu duaa duab duad dual duar dub- duba dubb dubu duda dudd dudo dudu duff dufu dula dull dulo dulu duo- dura duro duru duul duur faaa faad faba fabd fabo fabu fada fadd fado fafa faff fafo fala fald fall falo falu fara farb fard farl faro farr faru faud faul faur fbar fbla fdlr fdoa ffar ffff ffrr flab flad flao fldr