a-a a-b a-t aaa aab aaf aan aao aar aas aat ab- aba abb abf abn abo abr abs abt af- afa afb aff afn afo afr afs aft an- ana anb anf ann ano anr ans ant aoa aob aof aon aoo aor aos aot ar- ara arb arf arn aro arr ars art as- asa asb asf asn aso asr ass ast at- ata atb atf atn ato atr ats att baa bab baf ban bao bar bas bat bba bbb bbf bbn bbo bbr bbs bbt bfa bfb bff bfn bfo bfr bfs bft bna bnb bnf bnn bno bnr bns bnt boa bob bof bon boo bor bos bot bra brb brf brn bro brr brs brt bsa bsb bsf bsn bso bsr bss bst bta btb btf btn bto btr bts btt faa fab faf fan fao far fas fat fba fbb fbf fbn fbo fbr fbs fbt ffa fff ffn ffo ffr ffs fft fna fnb fnf fnn fnr fns fnt foa fob fof fon foo for fos fot fra frb frf frn fro frr frs frt fsa fsb fsf fsn fso fsr fss fst fta ftb ftf ftn fto ftr fts ftt naa nab naf nan nao nar nas nat nba nbb nbf nbn nbo nbr nbs nbt nfa nfb nff nfn nfo nfr nfs nft nna nnb nnf nnn nno nns nnt no- noa nob nof non noo nor nos not nra nrb nrf nrn nro nrr nrs nrt nsa nsb nsf nsn nso nsr nss nst nta ntb ntf ntn nto ntr nts ntt oaa oab oaf oan oao oar oas oat ob- oba obb obf obn obo obr obs obt of- ofa ofb off ofn ofo ofr ofs oft on- ona onb onf onn ono onr ons ont oo- ooa oob oof oon ooo oor oos oot or- ora orb orf orn oro orr ors ort os- osa osb osf osn oso osr oss ost ot- ota otb otf otn oto otr ots ott ra- raa rab raf ran rao rar ras rat rba rbb rbf rbn rbo rbr rbs rbt rfa rfb rff rfn rfo rfr rfs rft rna rnb rnn rno rnr rns rnt roa rob rof ron roo ror ros rot rra rrb rrf rrn rrr rrs rrt rsa rsb rsf rsn rso rsr rss rst rta rtb rtf rtn rto rtr rts rtt saa sab saf san sao sar sas sat sba sbb sbf sbn sbo sbr sbs sbt sfa sfb sff sfn sfo sfr sfs sft sna snb snf snn sno snr sns snt soa sob sof son soo sor sos sot sr- sra srb srf srn sro srr srs srt ss- ssa ssb ssf ssn sso ssr sss sst sta stb stf stn sto str sts stt taa tab taf tan tao tar tas tat tba tbb tbf tbn tbo tbr tbs tbt tfa tfb tff tfn tfo tfr tfs tft tna tnb tnf tnn tno tnr tns tnt to- toa tob tof ton too tor tos tot tra trb trf trn tro trr trs trt tsa tsb tsf tsn tso tsr tss tst tta ttb ttf ttn tto ttr tts ttt

-ana aaaa aaab aaaf aaan aaar aaas aaba aabb aabt aafa aafb aaff aana aaon aaoo aara aaro aars aart aasa aasf aass aast aata aatf aatt abaa abab abaf aban abar abas abat abb- abba abbb abbo abbr abbs abbt abff aboa abob abof abon aboo abor abos abot abra abro abrs abs- absa absf abss abta abts afaa afan afao afar afat afbs affa affo affs afft afoa afoo afor afr- afra afro afrs afsa afsb afst afta aftn afts ana- anaa anab anan anao anar anas anat anba anbb anbo anfa anfo anna annb anno anns annt ano- anoa anon anor anos ansa ansf anso ant- anta anto antr ants antt aoba aonb aono aont aora aorb aorn aors aort aoss aotf arab araf aran arar aras arat arba arbs arfa arfb arff arfs arft arna arno arns arnt aroa arob aron aroo aror aros arr- arra arro arrr arrs arrt ars- arsa arso arst arta arto artr arts asaa asab asaf asan asao asar asas asat asba asbo asfa asno asob asof ason asor asos asot asra asro asrs assa assn asso assr asss asst asta astb asto astr asts at-t ataa atab atan atar atas atat atbs atfb atfs atna atno atns atob atof aton ator atos atot atra atrn atro atsb atst atta attn atto attr atts baaa baaf baan baar baas baat baba babb babo babr babs baff bafo baft bana bann bano banr bans bant baon baos bar- bara barb barf barn baro barr bars bart basa basf baso bass bast bata batf batn bato bats batt bbas bbbb bbbs bbfn bfas bffs bfsr bfta bfts bftt bnas bnor bnrr bnss bnta boab boan boar boas boat boba bobb bobo bobs bofa boff bofs bona bonn bono bons bont boob boof boon boor boos boot bor- bora borf born boro borr bors bort bosa bosn boso boss bost bota botb botn boto bots bott brab braf bran brao bras brat brna brno brns broa brob bron broo bror bros brot brrr brrs brsb brsr brst bsaa bsas bsat bsfa bsff bsfs bsns bson bsos bsra bsts btaa btaf btan btob btor btrt btss bttb faaa faan faas faba fabo fabs fafa faff fafo fana fano fans fant faon fara farb faro farr fars fart fasa fasn faso fass fast fata fatf fato fats fatt fbar fbrs ffar ffff ffrr ffsa ffss fftf fnar fnrs fnta fntb foaf foan foar foba fobs fobt fofo fono fons font foof foon foos foot for- fora forb forn foro forr fors fort fosa fosb foso foss fost fota foto fots fott frab fran fras frat frns frob fron fros frot frsb frso frst frta fsas fsfo fsra fssa fssf fsta ftan ftos ftrs ftsa ftsr naaa naab naan naar naas naat naba nabf nabo nabs nafa naff nafo