-al -ol a-a a-b a-c aaa aab aac aaf aah aal aan aao aar aau ab- aba abb abc abf abh abl abn abo abr abu ac- aca acb acc acf ach acl acn aco acr acu af- afa afb afc aff afh afl afn afo afr afu aha ahb ahc ahf ahh ahl ahn aho ahr ahu al- ala alb alc alf alh all aln alo alr alu an- ana anb anc anf anh anl ann ano anr anu aoa aob aoc aof aoh aol aon aoo aor aou ar- ara arb arc arf arh arl arn aro arr aru au- aua aub auc auf auh aul aun auo aur b-u baa bab bac baf bah bal ban bao bar bau bba bbb bbc bbf bbh bbl bbn bbo bbr bbu bca bcb bcc bcf bch bcl bcn bco bcr bcu bfa bfb bfc bff bfh bfl bfn bfo bfr bfu bha bhb bhc bhf bhh bhl bho bhr bhu bla blb blc blf blh bll bln blo blr blu bna bnb bnc bnf bnl bnn bno bnr bnu boa bob boc bof boh bol bon boo bor bou bra brb brf brh brl brn bro brr bru bua bub buc buf buh bul bun buo bur buu c-- caa cab cac caf cah cal can cao car cau cba cbb cbc cbf cbh cbl cbn cbo cbr cbu cca ccb ccc ccf cch ccl ccn cco ccr ccu cfa cfb cfc cff cfh cfl cfn cfo cfr cfu ch- cha chb chc chf chh chl chn cho chr chu cl- cla clb clc clf clh cll cln clo clr clu cn- cna cnb cnc cnf cnh cnl cnn cno cnr cnu co- coa cob coc cof coh col con coo cor cou cra crb crc crf crh crl crn cro crr cru cua cub cuc cuf cuh cul cun cuo cur cuu faa fab fac faf fah fal fan fao far fau fba fbb fbc fbf fbh fbl fbn fbo fbr fbu fca fcb fcc fcf fcl fcn fco fcr fcu ffa ffc fff ffh ffl ffn ffo ffr ffu fha fhb fhc fhf fhh fhl fhn fho fhr fla flb flc flf fll fln flo flr flu fna fnb fnc fnf fnh fnl fnn fnr fnu foa fob foc fof foh fol fon foo for fou fra frb frc frf frh frl frn fro frr fru fua fub fuf ful fun fuo fur fuu haa hab hac haf hah hal han hao har hau hba hbb hbc hbf hbh hbl hbn hbo hbr hbu hca hcb hcc hcf hch hcl hcn hco hcr hfa hfb hfc hff hfh hfl hfn hfo hfr hfu hha hhb hhc hhf hhh hhl hhn hho hhr hhu hla hlb hlc hlf hlh hll hln hlo hlr hlu hna hnb hnc hnf hnh hnl hnn hno hnu hoa hob hoc hof hoh hol hon hoo hor hou hr- hra hrb hrc hrf hrh hrl hrn hro hrr hru hua hub huc huf huh hul hun huo hur huu la- laa lab lac laf lah lal lan lao lar lau lba lbb lbc lbf lbh lbl lbo lbr lbu lca lcb lcc lcf lch lcl lcn lco lcr lcu lfa lfb lfc lff lfh lfl lfn lfo lfr lfu lha lhb lhc lhf lhh lho lhr lhu lla llb llc llf lll lln llo llr llu lna lnb lnc lnh lnl lnn lno lnr lnu loa lob loc lof loh lol lon loo lor lou lra lrb lrc lrf lrh lrn lro lrr lru lua lub luc luf luh lul lun luo lur luu naa nab nac naf nah nal nan nao nar nau nba nbb nbc nbf nbl nbn nbo nbr nbu nca ncb ncc ncf nch ncl ncn nco ncr ncu nfa nfb nfc nff nfl nfn nfo nfr nfu nha nhb nhc nhf nhh nhl nhn nhr nhu nla nlb nlc nlf nlh nll nln nlo nlr nlu nna nnb nnc nnf nnh nnl nnn nno nnu no- noa nob noc nof noh nol non noo nor nou nra nrb nrc nrf nrl nrn nro nrr nru nua nub nuc nuh nul nun nuo nur nuu oaa oab oac oaf oah oal oan oao oar oau ob- oba obb obc obf obh obl obn obo obr obu oc- oca ocb occ ocf och ocl ocn oco ocr ocu of- ofa ofb ofc off ofl ofn ofo ofr ofu oha ohc ohf ohh ohl ohn oho ohr ohu ola olb olc olf oll oln olo olu on- ona onb onc onf onh onl onn ono onr onu oo- ooa oob ooc oof ooh ool oon ooo oor or- ora orb orc orf orh orl orn oro orr oru ou- oua ouc ouf ouh oul oun ouo our ra- raa rab rac raf rah ral ran rao rar rau rba rbb rbc rbf rbh rbl rbn rbo rbr rbu rca rcb rcc rcf rch rcl rcn rco rcr rcu rfa rfb rfc rff rfh rfl rfn rfo rfr rfu rh- rha rhb rhc rhf rhh rhl rhn rho rhr rhu rla rlc rlf rlh rll rln rlo rlr rlu rna rnb rnc rnh rnn rno rnr rnu roa rob roc rof roh rol ron roo ror rou rra rrb rrc rrf rrh rrl rrn rrr rru rua rub ruc ruf ruh run ruo rur ruu ua- uaa uab uac uaf uah ual uan uao uar uau uba ubb ubc ubf ubh ubl ubn ubo ubr ubu uca ucb ucc ucf uch ucl ucn uco ucr ucu ufa ufc uff ufh ufl ufn ufo ufr ufu uha uhb uhc uhf uhh uhl uho uhr uhu ula ulb ulc ulf ull uln ulo ulr ulu un- una unb unc unf unh unl unn uno unr unu uoa uob uoc uol uon uoo uor ur- ura urb urc urf url urn uro urr uru uua uuc uun uur uuu