a-a a-b aaa aab aad aaf aan aao aap aar aas ab- aba abb abd abf abn abo abp abr abs ad- ada adb add adf adn ado adp adr ads af- afa afb afd aff afn afo afp afr afs an- ana anb and anf ann ano anp anr ans aoa aob aod aof aon aoo aop aor aos ap- apa apb apd apf apn apo app apr aps ar- ara arb ard arf arn aro arp arr ars as- asa asb asd asf asn aso asp asr ass b-p baa bab bad baf ban bao bap bar bas bba bbb bbd bbf bbn bbo bbp bbr bbs bda bdb bdd bdf bdo bdp bdr bds bfa bfb bfd bff bfn bfo bfp bfr bfs bna bnb bnd bnf bnn bno bnp bnr bns boa bob bod bof bon boo bop bor bos bpa bpb bpd bpf bpn bpo bpp bpr bps bra brb brd brf brn bro brp brr brs bsa bsb bsd bsf bsn bso bsp bsr bss daa dab dad daf dan dao dap dar das dba dbb dbd dbf dbn dbo dbp dbr dbs dda ddb ddd ddf ddn ddo ddp ddr dds dfa dfb dfd dff dfn dfo dfp dfr dfs dna dnb dnd dnf dnn dno dnp dnr dns doa dob dod dof don doo dop dor dos dpa dpb dpd dpf dpn dpo dpp dpr dps dra drb drd drn dro drp drr drs dsa dsb dsd dsf dsn dso dsp dsr dss faa fab fad faf fan fao fap far fas fba fbb fbd fbf fbn fbo fbp fbr fbs fda fdb fdd fdf fdn fdo fdp fdr fds ffa ffd fff ffn ffo ffp ffr ffs fna fnb fnd fnf fnn fnp fnr fns foa fob fof fon foo fop for fos fpa fpb fpd fpn fpo fpp fpr fps fra frb frd frf frn fro frp frr frs fsa fsb fsd fsf fsn fso fsp fsr fss naa nab nad naf nan nao nap nar nas nba nbb nbd nbf nbn nbo nbp nbr nbs nda ndb ndd ndf ndn ndo ndp ndr nds nfa nfb nfd nff nfn nfo nfp nfr nfs nna nnb nnf nnn nno nnp nns no- noa nob nod nof non noo nop nor nos npa npb npd npf npn npo npp npr nps nra nrb nrd nrf nrn nro nrp nrr nrs nsa nsb nsd nsf nsn nso nsp nsr nss oaa oab oad oaf oan oao oap oar oas ob- oba obb obd obf obn obo obp obr obs oda odb odd odf odn odo odp odr ods of- ofa ofb ofd off ofn ofo ofp ofr ofs on- ona onb ond onf onn ono onp onr ons oo- ooa oob ood oof oon ooo oop oor oos op- opa opb opd opf opn opo opp opr ops or- ora orb ord orf orn oro orp orr ors os- osa osb osd osf osn oso osp osr oss p-p paa pab pad paf pan pao pap par pas pba pbb pbd pbf pbn pbo pbp pbr pbs pda pdb pdd pdf pdn pdo pdp pdr pds pfa pfb pfd pff pfn pfo pfp pfr pfs pn- pna pnb pnd pnf pnn pno pnp pnr pns poa pob pod pof pon poo pop por pos ppa ppb ppd ppf ppn ppo ppp ppr pps pra prb prd prf prn pro prp prr prs ps- psa psb psd psf psn pso psp psr pss ra- raa rab rad raf ran rao rap rar ras rba rbb rbd rbf rbn rbo rbp rbr rbs rda rdb rdd rdf rdn rdo rdp rdr rds rfa rfb rfd rff rfn rfo rfp rfr rfs rna rnb rnd rnn rno rnp rnr rns roa rob rod rof ron roo rop ror ros rpa rpb rpd rpf rpn rpo rpp rpr rps rra rrb rrd rrf rrn rrp rrr rrs rsa rsb rsd rsf rsn rso rsp rsr rss saa sab sad saf san sao sap sar sas sba sbb sbd sbf sbn sbo sbp sbr sbs sda sdb sdd sdf sdn sdo sdp sdr sds sfa sfb sfd sff sfn sfo sfp sfr sfs sna snb snd snf snn sno snp snr sns soa sob sod sof son soo sop sor sos spa spb spd spf spn spo spp spr sps sr- sra srb srd srf srn sro srp srr srs ss- ssa ssb ssd ssf ssn sso ssp ssr sss

-ana a-do aaaa aaab aaad aaaf aaan aaap aaar aaas aaba aabb aabd aabp aada aads aafa aafb aafd aaff aana aand aanp aaon aaoo aapa aapo aaps aara aard aaro aarp aars aasa aasd aasf aass abaa abab abad abaf aban abap abar abas abb- abba abbb abbo abbr abbs abda abdo abff aboa abob abod abof abon aboo abor abos abpa abpd abpn abpp abpr abps abra abro abrs abs- absa absd absf absp abss adaa adab adad adan adao adap adar adas adba adda addd addn addo addr adds adfa adfs adna adnp adns adob adod adon adoo ador ados adp- adps adra adro adrs adsa adso adsr adss afaa afad afan afao afap afar afbs afdb affa affo affs afoa afoo afor afpa afr- afra afro afrs afsa afsb afsp ana- anaa anab anad anan anao anap anar anas anba anbb anbo and- anda ando andr ands anfa anfo anna annb anno anns ano- anoa anod anon anor anos anp- anpa anpp anpr ansa ansd ansf anso ansp aoba aonb aono aopo aora aorb aorn aors aosd aosp aoss apan apao apap apar apas apba apbr apbs apda apdd apds apfa apfo apna apno apo- apod apof apon apoo apop apor apos appa appd appr apps apra aprn apro aprs apsa apso apss arab arad araf aran arap arar aras arba arbs arda ardf ardo ards arfa arfb arff arfs arna arnd arno arns aroa arob arod aron aroo aror aros arpa arps arr- arra arro arrr arrs ars- arsa arsd arso asaa