-up a-a a-b a-t aaa aab aao aap aar aas aat aau ab- aba abb abo abp abr abs abt abu aoa aob aoo aop aor aos aot aou ap- apa apb apo app apr aps apt apu ar- ara arb aro arp arr ars art aru as- asa asb aso asp asr ass ast asu at- ata atb ato atp atr ats att atu au- aua aub auo aup aur aus aut b-p b-u baa bab bao bap bar bas bat bau bba bbb bbo bbp bbr bbs bbt bbu boa bob boo bop bor bos bot bou bpa bpb bpo bpp bpr bps bpt bpu bra brb bro brp brr brs brt bru bsa bsb bso bsp bsr bss bst bsu bta btb bto btp btr bts btt btu bua bub buo bup bur bus but buu oaa oab oao oap oar oas oat oau ob- oba obb obo obp obr obs obt obu oo- ooa oob ooo oop oor oos oot op- opa opb opo opp opr ops opt or- ora orb oro orp orr ors ort oru os- osa osb oso osp osr oss ost osu ot- ota otb oto otp otr ots ott otu ou- oua ouo oup our ous out p-p paa pab pao pap par pas pat pau pba pbb pbo pbp pbr pbs pbt pbu poa pob poo pop por pos pot pou ppa ppb ppo ppp ppr pps ppt ppu pra prb pro prp prr prs prt pru ps- psa psb pso psp psr pss pst psu pt- pta ptb pto ptp ptr pts ptt ptu pua pub pup pur pus put puu ra- raa rab rao rap rar ras rat rau rba rbb rbo rbp rbr rbs rbt rbu roa rob roo rop ror ros rot rou rpa rpb rpo rpp rpr rps rpt rpu rra rrb rrp rrr rrs rrt rru rsa rsb rso rsp rsr rss rst rsu rta rtb rto rtp rtr rts rtt rtu rua rub ruo rup rur rus rut ruu saa sab sao sap sar sas sat sau sba sbb sbo sbp sbr sbs sbt sbu soa sob soo sop sor sos sot sou spa spb spo spp spr sps spt spu sr- sra srb sro srp srr srs srt ss- ssa ssb sso ssp ssr sss sst ssu sta stb sto stp str sts stt stu sua sub suo sup sur sus sut suu taa tab tao tap tar tas tat tau tba tbb tbo tbp tbr tbs tbt tbu to- toa tob too top tor tos tot tou tpa tpb tpo tpp tpr tps tpt tpu tra trb tro trp trr trs trt tru tsa tsb tso tsp tsr tss tst tsu tta ttb tto ttp ttr tts ttt ttu tua tub tuo tup tur tus tut tuu ua- uaa uab uao uap uar uas uat uau uba ubb ubo ubp ubr ubs ubt ubu uoa uob uoo uop uor uos uot up- upa upb upo upp upr ups upt upu ur- ura urb uro urp urr urs urt uru usa usb uso usp usr uss ust usu uta utb uto utp utr uts utt utu uua uur uus uut uuu

-ous aaaa aaab aaap aaar aaas aaba aabb aabp aabt aaoo aapa aapo aaps aapt aara aaro aarp aars aart aaru aasa aass aast aasu aata aatt aaup aaus abaa abab abap abar abas abat abau abb- abba abbb abbo abbr abbs abbt aboa abob aboo abor abos abot abou abpa abpp abpr abps abra abro abrs abs- absa absp abss absu abta abts abtu abua abus abut aoba aopo aora aorb aors aort aosp aoss aous aout apao apap apar apas apat apba apbr apbs apo- apoo apop apor apos apot apou appa appr apps appt appu apra apro aprs aprt apsa apso apss apsu apta apts aptt apua apup apus arab arap arar aras arat arau arba arbs aroa arob aroo aror aros arpa arps arpu arr- arra arro arrr arrs arrt arru ars- arsa arso arst arsu arta arto artr arts arua arub arup arut asaa asab asao asap asar asas asat asau asba asbo asbu asob asop asor asos asot asou aspa aspo aspr asps aspt asra asro asrs asru assa asso assp assr asss asst assu asta astb asto astp astr asts asub asur asus at-t ataa atab atap atar atas atat atbs atob atop ator atos atot atpr atra atro atrp atru atsb atst atta atto attp attr atts attu atua atub atur atus auaa aups aur- aura auro ausa aust ausu aut- auto auts baaa baar baas baat baba babb babo babr babs babu baos bapa bapp baps bapt bapu bar- bara barb baro barr bars bart baru basa baso bass bast basu bata bato bats batt batu bau- baur bbas bbau bbbb bbbs bbpr boab boar boas boat boba bobb bobo bobs bobu boob boop boor boos boot bopa bopp bops bor- bora boro borr bors bort boru bosa boso boss bost bosu bota botb boto bots bott boua boup bour bous bout bpot bpsa bpsu brab brao bras brat brau broa brob broo bror bros brot brou brrr brrs brsb brsr brst brup brus brut bsaa bsap bsas bsat bsos bspp bspr bsra bsts bsup btaa btbp btob btor btps btrt btss bttb btus buar buat buba bubb bubo bubs bubu bupa bups bur- bura burb buro burp burr burs burt buru busa buss bust busu but- buta buto buts butt buus oaau oaps oara oars oass oast oats obas obba obbo obor obos obot obra obro obsr obss obst obts obus ooaa ooba oooo ooos oops oora oort oosa oost ootb ootp oots oous opap opar opo- opor opos oppa oppo opps opra opsa opsu opto opts opua opus orab orao orar oras orat orba orbb orbo orbs orbu oro- oror oros orot orps orra orro orrs orsa orso orsu orta orto orts orub orup orus osap osar osas osat osba osbp osoo osor osos osro ossa ossb osso ossu osta