-al -ol a-a a-b aaa aab aaf aal aan aao aar aas aau ab- aba abb abf abl abn abo abr abs abu af- afa afb aff afl afn afo afr afs afu al- ala alb alf all aln alo alr als alu an- ana anb anf anl ann ano anr ans anu aoa aob aof aol aon aoo aor aos aou ar- ara arb arf arl arn aro arr ars aru as- asa asb asf asl asn aso asr ass asu au- aua aub auf aul aun auo aur aus b-u baa bab baf bal ban bao bar bas bau bba bbb bbf bbl bbn bbo bbr bbs bbu bfa bfb bff bfl bfn bfo bfr bfs bfu bla blb blf bll bln blo blr bls blu bna bnb bnf bnl bnn bno bnr bns bnu boa bob bof bol bon boo bor bos bou bra brb brf brl brn bro brr brs bru bsa bsb bsf bsl bsn bso bsr bss bsu bua bub buf bul bun buo bur bus buu faa fab faf fal fan fao far fas fau fba fbb fbf fbl fbn fbo fbr fbs fbu ffa fff ffl ffn ffo ffr ffs ffu fla flb flf fll fln flo flr fls flu fna fnb fnf fnl fnn fnr fns fnu foa fob fof fol fon foo for fos fou fra frb frf frl frn fro frr frs fru fsa fsb fsf fsl fsn fso fsr fss fsu fua fub fuf ful fun fuo fur fus fuu la- laa lab laf lal lan lao lar las lau lba lbb lbf lbl lbo lbr lbs lbu lfa lfb lff lfl lfn lfo lfr lfs lfu lla llb llf lll lln llo llr lls llu lna lnb lnl lnn lno lnr lns lnu loa lob lof lol lon loo lor los lou lra lrb lrf lrn lro lrr lrs lru lsa lsb lsf lsl lsn lso lsr lss lsu lua lub luf lul lun luo lur lus luu naa nab naf nal nan nao nar nas nau nba nbb nbf nbl nbn nbo nbr nbs nbu nfa nfb nff nfl nfn nfo nfr nfs nfu nla nlb nlf nll nln nlo nlr nls nlu nna nnb nnf nnl nnn nno nns nnu no- noa nob nof nol non noo nor nos nou nra nrb nrf nrl nrn nro nrr nrs nru nsa nsb nsf nsl nsn nso nsr nss nsu nua nub nul nun nuo nur nus nuu oaa oab oaf oal oan oao oar oas oau ob- oba obb obf obl obn obo obr obs obu of- ofa ofb off ofl ofn ofo ofr ofs ofu ola olb olf oll oln olo ols olu on- ona onb onf onl onn ono onr ons onu oo- ooa oob oof ool oon ooo oor oos or- ora orb orf orl orn oro orr ors oru os- osa osb osf osl osn oso osr oss osu ou- oua ouf oul oun ouo our ous ra- raa rab raf ral ran rao rar ras rau rba rbb rbf rbl rbn rbo rbr rbs rbu rfa rfb rff rfl rfn rfo rfr rfs rfu rla rlf rll rln rlo rlr rls rlu rna rnb rnn rno rnr rns rnu roa rob rof rol ron roo ror ros rou rra rrb rrf rrl rrn rrr rrs rru rsa rsb rsf rsl rsn rso rsr rss rsu rua rub ruf run ruo rur rus ruu saa sab saf sal san sao sar sas sau sba sbb sbf sbl sbn sbo sbr sbs sbu sfa sfb sff sfl sfn sfo sfr sfs sfu sla slb slf sll sln slo slr sls slu sna snb snf snl snn sno snr sns snu soa sob sof sol son soo sor sos sou sr- sra srb srf srl srn sro srr srs ss- ssa ssb ssf ssl ssn sso ssr sss ssu sua sub suf sul sun suo sur sus suu ua- uaa uab uaf ual uan uao uar uas uau uba ubb ubf ubl ubn ubo ubr ubs ubu ufa uff ufl ufn ufo ufr ufs ufu ula ulb ulf ull uln ulo ulr uls ulu un- una unb unf unl unn uno unr uns unu uoa uob uol uon uoo uor uos ur- ura urb urf url urn uro urr urs uru usa usb usf usl usn uso usr uss usu uua uun uur uus uuu