a-a a-b aaa aab aan aao aap aar aas ab- aba abb abn abo abp abr abs an- ana anb ann ano anp anr ans aoa aob aon aoo aop aor aos ap- apa apb apn apo app apr aps ar- ara arb arn aro arp arr ars as- asa asb asn aso asp asr ass b-p baa bab ban bao bap bar bas bba bbb bbn bbo bbp bbr bbs bna bnb bnn bno bnp bnr bns boa bob bon boo bop bor bos bpa bpb bpn bpo bpp bpr bps bra brb brn bro brp brr brs bsa bsb bsn bso bsp bsr bss naa nab nan nao nap nar nas nba nbb nbn nbo nbp nbr nbs nna nnb nnn nno nnp nns no- noa nob non noo nop nor nos npa npb npn npo npp npr nps nra nrb nrn nro nrp nrr nrs nsa nsb nsn nso nsp nsr nss oaa oab oan oao oap oar oas ob- oba obb obn obo obp obr obs on- ona onb onn ono onp onr ons oo- ooa oob oon ooo oop oor oos op- opa opb opn opo opp opr ops or- ora orb orn oro orp orr ors os- osa osb osn oso osp osr oss p-p paa pab pan pao pap par pas pba pbb pbn pbo pbp pbr pbs pn- pna pnb pnn pno pnp pnr pns poa pob pon poo pop por pos ppa ppb ppn ppo ppp ppr pps pra prb prn pro prp prr prs ps- psa psb psn pso psp psr pss ra- raa rab ran rao rap rar ras rba rbb rbn rbo rbp rbr rbs rna rnb rnn rno rnp rnr rns roa rob ron roo rop ror ros rpa rpb rpn rpo rpp rpr rps rra rrb rrn rrp rrr rrs rsa rsb rsn rso rsp rsr rss saa sab san sao sap sar sas sba sbb sbn sbo sbp sbr sbs sna snb snn sno snp snr sns soa sob son soo sop sor sos spa spb spn spo spp spr sps sr- sra srb srn sro srp srr srs ss- ssa ssb ssn sso ssp ssr sss

-ana aaaa aaab aaan aaap aaar aaas aaba aabb aabp aana aanp aaon aaoo aapa aapo aaps aara aaro aarp aars aasa aass abaa abab aban abap abar abas abb- abba abbb abbo abbr abbs aboa abob abon aboo abor abos abpa abpn abpp abpr abps abra abro abrs abs- absa absp abss ana- anaa anab anan anao anap anar anas anba anbb anbo anna annb anno anns ano- anoa anon anor anos anp- anpa anpp anpr ansa anso ansp aoba aonb aono aopo aora aorb aorn aors aosp aoss apan apao apap apar apas apba apbr apbs apna apno apo- apon apoo apop apor apos appa appr apps apra aprn apro aprs apsa apso apss arab aran arap arar aras arba arbs arna arno arns aroa arob aron aroo aror aros arpa arps arr- arra arro arrr arrs ars- arsa arso asaa asab asan asao asap asar asas asba asbo asno asob ason asop asor asos aspa aspo aspr asps asra asro asrs assa assn asso assp assr asss baaa baan baar baas baba babb babo babr babs bana bann bano banp banr bans baon baos bapa bapp baps bar- bara barb barn baro barr bars basa baso bass bbas bbbb bbbs bbpr bnas bnor bnpp bnrr bnss boab boan boar boas boba bobb bobo bobs bona bonn bono bons boob boon boop boor boos bopa bopp bops bor- bora born boro borr bors bosa bosn boso boss bpsa brab bran brao bras brna brno brns broa brob bron broo bror bros brrr brrs brsb brsr bsaa bsap bsas bsns bson bsos bspp bspr bsra naaa naab naan naar naas naba nabo nabs nan- nana nanb nann nano nanp nans naor naos napa napb napo napp naps nara narn naro narp narr nars nas- nasa nasb naso nasp nasr nass nbaa nbap nbar nbas nbbo nbpa nbpp nbps nbsp nnnn nnos nnpr nnsa nnss noaa noap noba nobo nobs non- nona nonn nono nons noo- noob noon nooo noop noor noos nops nor- nora norb norn noro norr nors nos- nosa noss npap npas nppa npra npsa npss nrab nrap nras nrna nron nrpn nrps nrsa nrsp nsaa nsar nsbo nsna nsnr nsos nsps nsra nssa nssb nsso nssp nssr nsss oaps oara oars oass oban obas obba obbo obon obor obos obra obro obsn obsr obss onab onan onar onas onna onno onon onor onos onra onso ooaa ooba oona oons oooo ooos oops oora oosa opan opap opar opo- opon opor opos oppa oppo opps opra opsa orab oran orao orar oras orba orbb orbo orbs orna orno orns oro- oron oror oros orps orra orro orrs orsa orso osan osap osar osas osba osbp osno osnr osoo osor osos osro ossa ossb osso paan paap paar paas paba pan- pana pann pano pans paon paos papa papb papp papr paps par- para parn paro parp parr pars pasa paso pasp pass pban pbar pbpa pbrs pbsa pbsp pnar pnas pnon pnpo pnpp pnra pnro poan poar poas poba pobo pobs pona pono ponp pons poon poop poor poos pop- popa popo popp pops pora porb porn poro porr pors posa posb posn poso poss ppan ppap ppar ppoa ppos pppa pppn pppo pppp ppps ppss pran prao prar pras prbs prna prnp pro- proa prob pron proo prop pros prps prrs prsa prso prss psap psas psbr psna psnr psoa pson psos pspp pspr psps psrp pssa psso raab raan raas raba rabb rabo rabs rana rann rano rans raob raop raos rapa rapp raps rara rarb raro rars rasa raso rasp rass rbbb rbbr rbbs rbsp rbss rnas rnbr rnsp roab roan roap roar roas rob- roba robb robo robs rona rono rons roob roon roop roor roos ropa ropo rops rora roro rosa roso rosp ross rpob rpon rpos rppn rpps rras