-al -ol a-a a-b aaa aab aaf aal aan aao aar aas ab- aba abb abf abl abn abo abr abs af- afa afb aff afl afn afo afr afs al- ala alb alf all aln alo alr als an- ana anb anf anl ann ano anr ans aoa aob aof aol aon aoo aor aos ar- ara arb arf arl arn aro arr ars as- asa asb asf asl asn aso asr ass baa bab baf bal ban bao bar bas bba bbb bbf bbl bbn bbo bbr bbs bfa bfb bff bfl bfn bfo bfr bfs bla blb blf bll bln blo blr bls bna bnb bnf bnl bnn bno bnr bns boa bob bof bol bon boo bor bos bra brb brf brl brn bro brr brs bsa bsb bsf bsl bsn bso bsr bss faa fab faf fal fan fao far fas fba fbb fbf fbl fbn fbo fbr fbs ffa fff ffl ffn ffo ffr ffs fla flb flf fll fln flo flr fls fna fnb fnf fnl fnn fnr fns foa fob fof fol fon foo for fos fra frb frf frl frn fro frr frs fsa fsb fsf fsl fsn fso fsr fss la- laa lab laf lal lan lao lar las lba lbb lbf lbl lbo lbr lbs lfa lfb lff lfl lfn lfo lfr lfs lla llb llf lll lln llo llr lls lna lnb lnl lnn lno lnr lns loa lob lof lol lon loo lor los lra lrb lrf lrn lro lrr lrs lsa lsb lsf lsl lsn lso lsr lss naa nab naf nal nan nao nar nas nba nbb nbf nbl nbn nbo nbr nbs nfa nfb nff nfl nfn nfo nfr nfs nla nlb nlf nll nln nlo nlr nls nna nnb nnf nnl nnn nno nns no- noa nob nof nol non noo nor nos nra nrb nrf nrl nrn nro nrr nrs nsa nsb nsf nsl nsn nso nsr nss oaa oab oaf oal oan oao oar oas ob- oba obb obf obl obn obo obr obs of- ofa ofb off ofl ofn ofo ofr ofs ola olb olf oll oln olo ols on- ona onb onf onl onn ono onr ons oo- ooa oob oof ool oon ooo oor oos or- ora orb orf orl orn oro orr ors os- osa osb osf osl osn oso osr oss ra- raa rab raf ral ran rao rar ras rba rbb rbf rbl rbn rbo rbr rbs rfa rfb rff rfl rfn rfo rfr rfs rla rlf rll rln rlo rlr rls rna rnb rnn rno rnr rns roa rob rof rol ron roo ror ros rra rrb rrf rrl rrn rrr rrs rsa rsb rsf rsl rsn rso rsr rss saa sab saf sal san sao sar sas sba sbb sbf sbl sbn sbo sbr sbs sfa sfb sff sfl sfn sfo sfr sfs sla slb slf sll sln slo slr sls sna snb snf snl snn sno snr sns soa sob sof sol son soo sor sos sr- sra srb srf srl srn sro srr srs ss- ssa ssb ssf ssl ssn sso ssr sss

-ana aaaa aaab aaaf aaal aaan aaar aaas aaba aabb aabl aafa aafb aaff aafl aala aall aalo aals aana aaon aaoo aara aaro aars aasa aasf aass abaa abab abaf abal aban abar abas abb- abba abbb abbo abbr abbs abff abla ablo abls aboa abob abof abol abon aboo abor abos abra abro abrs abs- absa absf absl abss afaa afan afao afar afbs affa affo affs afla afoa afol afoo afor afr- afra afro afrs afsa afsb alaa alal alan alao alar alas alb- alba albo albs alfa alfs all- alla alll alln allo allr alls alna aloa alof alol alon aloo alor alos alro alsa alsn also ana- anaa anab anal anan anao anar anas anba anbb anbl anbo anfa anfo anla anln anlo anna annb anno anns ano- anoa anon anor anos ansa ansf anso aoba aola aonb aono aora aorb aorn aors aoss arab araf aral aran arar aras arba arbs arfa arfb arff arfs arla arlo arna arno arns aroa arob aron aroo aror aros arr- arra arro arrr arrs ars- arsa arso asaa asab asaf asal asan asao asar asas asba asbo asfa asla aslo aslr asnl asno asob asof ason asor asos asra asro asrs assa assl assn asso assr asss baaa baaf baal baan baar baas baba babb babo babr babs baff bafo bala balf ball balo bals bana bann bano banr bans baol baon baos bar- bara barb barf barn baro barr bars basa basf baso bass bbas bbbb bbbs bbfn bblb bbls bfas bffl bffs bfsr blaa blab blan blas blls blno blob blon bloo blss bnas bnor bnrr bnss boab boal boan boar boas boba bobb bobo bobs bofa boff bofs bola boll boln bolo bols bona bonn bono bons boob boof bool boon boor boos bor- bora borf born boro borr bors bosa bosn boso boss brab braf bran brao bras brls brna brno brns broa brob brol bron broo bror bros brrr brrs brsb brsr bsaa bsas bsfa bsff bsfs bsns bson bsos bsra faaa faan faas faba fabo fabs fafa faff fafo fala fall faln falo fals fana fano fans faon fara farb farl faro farr fars fasa fasn faso fass fbar fbla fbrs ffar ffff ffrr ffsa ffss flab flan flao flna flnb flob flon floo flor flos fnar fnrs foaf foal foan foar foba fobs fofo fola foll folo folr fols fono fons foof fool foon foos for- fora forb forl forn foro forr fors fosa fosb foso foss frab fran fras frla frns frob frol fron fros frsb frso fsas fsfo fsln fsra fssa fssf laaa laal laan laar laas laba labo labr labs lafb laff lala lall lalo lan- lana lann lano lans laon laos lara larb larf larn larr lars lasa laso lass lbar lblr lbos lbrs llan llao llbs llll lloa lloo lnfs lnso loaf loan