-up a-a a-b a-c aaa aab aac aam aao aap aar aas aau ab- aba abb abc abm abo abp abr abs abu ac- aca acb acc acm aco acp acr acs acu ama amb amc amm amo amp amr ams amu aoa aob aoc aom aoo aop aor aos aou ap- apa apb apc apm apo app apr aps apu ar- ara arb arc arm aro arp arr ars aru as- asa asb asc asm aso asp asr ass asu au- aua aub auc aum auo aup aur aus b-p b-u baa bab bac bam bao bap bar bas bau bba bbb bbc bbm bbo bbp bbr bbs bbu bca bcb bcc bcm bco bcp bcr bcs bcu bma bmb bmc bmm bmo bmp bmr bms bmu boa bob boc bom boo bop bor bos bou bpa bpb bpc bpm bpo bpp bpr bps bpu bra brb brm bro brp brr brs bru bsa bsb bsc bsm bso bsp bsr bss bsu bua bub buc bum buo bup bur bus buu c-- caa cab cac cam cao cap car cas cau cba cbb cbc cbm cbo cbp cbr cbs cbu cca ccb ccc ccm cco ccp ccr ccs ccu cma cmb cmc cmm cmo cmp cmr cms cmu co- coa cob coc com coo cop cor cos cou cpa cpb cpc cpm cpo cpp cpr cps cpu cra crb crc crm cro crp crr crs cru csa csb csc csm cso csp csr css csu cua cub cuc cum cuo cup cur cus cuu m-o m-r maa mab mac mam mao map mar mas mau mba mbb mbc mbm mbo mbp mbr mbs mbu mc- mca mcb mcc mcm mco mcp mcr mcs mcu mma mmb mmc mmm mmo mmp mmr mms mmu moa mob moc mom moo mop mor mos mou mpa mpb mpc mpm mpo mpp mpr mps mpu mra mrb mrc mrm mro mrp mrr mrs mru msa msb msc msm mso msp msr mss msu mua mub muc mum mup mur mus muu oaa oab oac oam oao oap oar oas oau ob- oba obb obc obm obo obp obr obs obu oc- oca ocb occ ocm oco ocp ocr ocs ocu om- oma omb omc omm omo omp omr oms omu oo- ooa oob ooc oom ooo oop oor oos op- opa opb opc opm opo opp opr ops or- ora orb orc orm oro orp orr ors oru os- osa osb osc osm oso osp osr oss osu ou- oua ouc oum ouo oup our ous p-p paa pab pac pam pao pap par pas pau pba pbb pbc pbm pbo pbp pbr pbs pbu pca pcb pcc pcm pco pcp pcr pcs pcu pma pmb pmc pmm pmo pmp pmr pms pmu poa pob poc pom poo pop por pos pou ppa ppb ppc ppm ppo ppp ppr pps ppu pra prb prc prm pro prp prr prs pru ps- psa psb psc psm pso psp psr pss psu pua pub puc pum pup pur pus puu ra- raa rab rac ram rao rap rar ras rau rba rbb rbc rbm rbo rbp rbr rbs rbu rca rcb rcc rcm rco rcp rcr rcs rcu rma rmb rmc rmm rmo rmp rmr rms roa rob roc rom roo rop ror ros rou rpa rpb rpc rpm rpo rpp rpr rps rpu rra rrb rrc rrm rrp rrr rrs rru rsa rsb rsc rsm rso rsp rsr rss rsu rua rub ruc rum ruo rup rur rus ruu saa sab sac sam sao sap sar sas sau sba sbb sbc sbm sbo sbp sbr sbs sbu sca scb scc scm sco scp scr scs scu sma smb smc smm smo smp smr sms smu soa sob soc som soo sop sor sos sou spa spb spc spm spo spp spr sps spu sr- sra srb src srm sro srp srr srs ss- ssa ssb ssc ssm sso ssp ssr sss ssu sua sub suc sum suo sup sur sus suu ua- uaa uab uac uam uao uap uar uas uau uba ubb ubc ubo ubp ubr ubs ubu uca ucb ucc ucm uco ucp ucr ucs ucu um- uma umb umc umm umo ump umr ums umu uoa uob uoc uom uoo uop uor uos up- upa upb upc upm upo upp upr ups upu ur- ura urb urc urm uro urp urr urs uru usa usb usc usm uso usp usr uss usu uua uuc uum uur uus uuu

-ous aaaa aaab aaac aaam aaap aaar aaas aaba aabb aabc aabm aabp aaca aacb aacc aacm aaco aacp aacr aacs aacu aama aamb aamc aamo aamp aamr aams aaoo aapa aapc aapm aapo aaps aara aarc aarm aaro aarp aars aaru aasa aasc aasm aass aasu aaup aaus abaa abab abac abam abap abar abas abau abb- abba abbb abbo abbr abbs abca abcb abcc abcp abcr abcs abma abmb abmc abms aboa abob aboo abor abos abou abpa abpc abpm abpp abpr abps abra abrc abro abrs abs- absa absp abss absu abua abum abus acaa acab acac acap acar acas acba acca accc accm acco accp accs accu acma acmc acmp acms acmu acoa acom acop acor acos acou acpa acpm acpr acps acpu acr- acra acrc acrm acro acrr acrs acsa acsc acsm acss acu- acum acuo acup acur acus amaa amac amam amap amar amas amb- amba ambo ambr ambs ambu amca amcc amco amcs amm- amma ammo ammu amob amoc amoo amor amos amou ampa ampc ampm ampo amps amra amrc amro amsa amsc amso amss amua amum amur aoba aoca aocs aoma aopo aora aorb aors aosp aoss aous apac apam apao apap apar apas apba apbr apbs apca apcb apcc apcm apco apcr apcs apma apo- apoc apom apoo apop apor apos apou appa appc appr apps appu apra aprc apro aprs apsa apso apss apsu apua apuc apum apup apus arab arac aram arap arar aras arau arba arbs arc- arca arcm arco arcs