-up a-a a-b aaa aab aao aap aar aas aau ab- aba abb abo abp abr abs abu aoa aob aoo aop aor aos aou ap- apa apb apo app apr aps apu ar- ara arb aro arp arr ars aru as- asa asb aso asp asr ass asu au- aua aub auo aup aur aus b-p b-u baa bab bao bap bar bas bau bba bbb bbo bbp bbr bbs bbu boa bob boo bop bor bos bou bpa bpb bpo bpp bpr bps bpu bra brb bro brp brr brs bru bsa bsb bso bsp bsr bss bsu bua bub buo bup bur bus buu oaa oab oao oap oar oas oau ob- oba obb obo obp obr obs obu oo- ooa oob ooo oop oor oos op- opa opb opo opp opr ops or- ora orb oro orp orr ors oru os- osa osb oso osp osr oss osu ou- oua ouo oup our ous p-p paa pab pao pap par pas pau pba pbb pbo pbp pbr pbs pbu poa pob poo pop por pos pou ppa ppb ppo ppp ppr pps ppu pra prb pro prp prr prs pru ps- psa psb pso psp psr pss psu pua pub pup pur pus puu ra- raa rab rao rap rar ras rau rba rbb rbo rbp rbr rbs rbu roa rob roo rop ror ros rou rpa rpb rpo rpp rpr rps rpu rra rrb rrp rrr rrs rru rsa rsb rso rsp rsr rss rsu rua rub ruo rup rur rus ruu saa sab sao sap sar sas sau sba sbb sbo sbp sbr sbs sbu soa sob soo sop sor sos sou spa spb spo spp spr sps spu sr- sra srb sro srp srr srs ss- ssa ssb sso ssp ssr sss ssu sua sub suo sup sur sus suu ua- uaa uab uao uap uar uas uau uba ubb ubo ubp ubr ubs ubu uoa uob uoo uop uor uos up- upa upb upo upp upr ups upu ur- ura urb uro urp urr urs uru usa usb uso usp usr uss usu uua uur uus uuu

-ous aaaa aaab aaap aaar aaas aaba aabb aabp aaoo aapa aapo aaps aara aaro aarp aars aaru aasa aass aasu aaup aaus abaa abab abap abar abas abau abb- abba abbb abbo abbr abbs aboa abob aboo abor abos abou abpa abpp abpr abps abra abro abrs abs- absa absp abss absu abua abus aoba aopo aora aorb aors aosp aoss aous apao apap apar apas apba apbr apbs apo- apoo apop apor apos apou appa appr apps appu apra apro aprs apsa apso apss apsu apua apup apus arab arap arar aras arau arba arbs aroa arob aroo aror aros arpa arps arpu arr- arra arro arrr arrs arru ars- arsa arso arsu arua arub arup asaa asab asao asap asar asas asau asba asbo asbu asob asop asor asos asou aspa aspo aspr asps asra asro asrs asru assa asso assp assr asss assu asub asur asus auaa aups aur- aura auro ausa ausu baaa baar baas baba babb babo babr babs babu baos bapa bapp baps bapu bar- bara barb baro barr bars baru basa baso bass basu bau- baur bbas bbau bbbb bbbs bbpr boab boar boas boba bobb bobo bobs bobu boob boop boor boos bopa bopp bops bor- bora boro borr bors boru bosa boso boss bosu boua boup bour bous bpsa bpsu brab brao bras brau broa brob broo bror bros brou brrr brrs brsb brsr brup brus bsaa bsap bsas bsos bspp bspr bsra bsup buar buba bubb bubo bubs bubu bupa bups bur- bura burb buro burp burr burs buru busa buss busu buus oaau oaps oara oars oass obas obba obbo obor obos obra obro obsr obss obus ooaa ooba oooo ooos oops oora oosa oous opap opar opo- opor opos oppa oppo opps opra opsa opsu opua opus orab orao orar oras orba orbb orbo orbs orbu oro- oror oros orps orra orro orrs orsa orso orsu orub orup orus osap osar osas osba osbp osoo osor osos osro ossa ossb osso ossu oubs oupa our- oura ouro ours ousa ouu- paap paar paas paba pabu paos papa papb papp papr paps par- para paro parp parr pars paru pasa paso pasp pass paua paup paur paus pbar pbpa pbrs pbsa pbsp poar poas poba pobo pobs poop poor poos pop- popa popo popp pops pora porb poro porr pors posa posb poso poss poup pour pous ppap ppar ppoa ppos pppa pppo pppp ppps ppru ppss ppur prao prar pras prau prbs pro- proa prob proo prop pros prou prps prrs prsa prso prss prus pruu psap psas psbr psoa psos psou pspp pspr psps psrp pssa psso puao puar puas pubs pubu pupa pups pupu pur- pura purb puro purp purr purs puru pusa puss raab raas raba rabb rabo rabs rabu raob raop raos rapa rapp raps rara rarb raro rars rasa raso rasp rass rasu raua raub raup raus rbbb rbbr rbbs rbsp rbss roab roap roar roas rob- roba robb robo robs robu roob roop roor roos ropa ropo rops rora roro roru rosa roso rosp ross roua roub roup rous rpob rpos rpps rras rrrr rrsp rsaa rsos rspb rspo rsps rssa rsua ruas ruba rubb rubp rubs rubu rupa rupp rura ruro rurp rurs ruru rusa ruso russ rusu s-os saab saap saar saas saba sabb sabo sabr sabs sabu saor saos saou sapa sapo sapp saps sara saro sarp sarr sars saru sasa saso sass saua saup saur saus sbaa sbar sbas sbbs sbor sbsa sbsp sbus soap soar soas soba sobo sobp sobr sobs sobu soop soor soos sopa sopo sopp sops sopu sora sorb soro sorr sors soru sosa soso soss soup sour sous sp-a spap spar spas spau spoo spop spor spos spps spro sprs spsa spso spsp spss spur spus sras sros srps srsp srub ssaa ssab ssao ssap ssas ssau