-up a-a a-b a-c aaa aab aac aad aao aap aar aas aau ab- aba abb abc abd abo abp abr abs abu ac- aca acb acc acd aco acp acr acs acu ad- ada adb adc add ado adp adr ads adu aoa aob aoc aod aoo aop aor aos aou ap- apa apb apc apd apo app apr aps apu ar- ara arb arc ard aro arp arr ars aru as- asa asb asc asd aso asp asr ass asu au- aua aub auc aud auo aup aur aus b-p b-u baa bab bac bad bao bap bar bas bau bba bbb bbc bbd bbo bbp bbr bbs bbu bca bcb bcc bcd bco bcp bcr bcs bcu bda bdb bdc bdd bdo bdp bdr bds bdu boa bob boc bod boo bop bor bos bou bpa bpb bpc bpd bpo bpp bpr bps bpu bra brb brd bro brp brr brs bru bsa bsb bsc bsd bso bsp bsr bss bsu bua bub buc bud buo bup bur bus buu c-- caa cab cac cad cao cap car cas cau cba cbb cbc cbd cbo cbp cbr cbs cbu cca ccb ccc ccd cco ccp ccr ccs ccu cda cdb cdc cdd cdo cdp cdr cds cdu co- coa cob coc cod coo cop cor cos cou cpa cpb cpc cpd cpo cpp cpr cps cpu cra crb crc crd cro crp crr crs cru csa csb csc csd cso csp csr css csu cua cub cuc cud cuo cup cur cus cuu daa dab dac dad dao dap dar das dau dba dbb dbc dbd dbo dbp dbr dbs dbu dca dcb dcc dcd dco dcp dcr dcs dcu dda ddb ddc ddd ddo ddp ddr dds ddu doa dob doc dod doo dop dor dos dou dpa dpb dpc dpd dpo dpp dpr dps dpu dra drb drc drd dro drp drr drs dru dsa dsb dsc dsd dso dsp dsr dss dsu dua dub duc dud duo dup dur dus oaa oab oac oad oao oap oar oas oau ob- oba obb obc obd obo obp obr obs obu oc- oca ocb occ ocd oco ocp ocr ocs ocu oda odb odc odd odo odp odr ods odu oo- ooa oob ooc ood ooo oop oor oos op- opa opb opc opd opo opp opr ops or- ora orb orc ord oro orp orr ors oru os- osa osb osc osd oso osp osr oss osu ou- oua ouc oud ouo oup our ous p-p paa pab pac pad pao pap par pas pau pba pbb pbc pbd pbo pbp pbr pbs pbu pca pcb pcc pcd pco pcp pcr pcs pcu pda pdb pdc pdd pdo pdp pdr pds pdu poa pob poc pod poo pop por pos pou ppa ppb ppc ppd ppo ppp ppr pps ppu pra prb prc prd pro prp prr prs pru ps- psa psb psc psd pso psp psr pss psu pua pub puc pud pup pur pus puu ra- raa rab rac rad rao rap rar ras rau rba rbb rbc rbd rbo rbp rbr rbs rbu rca rcb rcc rcd rco rcp rcr rcs rcu rda rdb rdc rdd rdo rdp rdr rds rdu roa rob roc rod roo rop ror ros rou rpa rpb rpc rpd rpo rpp rpr rps rpu rra rrb rrc rrd rrp rrr rrs rru rsa rsb rsc rsd rso rsp rsr rss rsu rua rub ruc rud ruo rup rur rus ruu saa sab sac sad sao sap sar sas sau sba sbb sbc sbd sbo sbp sbr sbs sbu sca scb scc scd sco scp scr scs scu sda sdb sdc sdd sdo sdp sdr sds sdu soa sob soc sod soo sop sor sos sou spa spb spc spd spo spp spr sps spu sr- sra srb src srd sro srp srr srs ss- ssa ssb ssc ssd sso ssp ssr sss ssu sua sub suc sud suo sup sur sus suu ua- uaa uab uac uad uao uap uar uas uau uba ubb ubc ubo ubp ubr ubs ubu uca ucb ucc ucd uco ucp ucr ucs ucu uda udb udc udd udo udp udr uds udu uoa uob uoc uod uoo uop uor uos up- upa upb upc upd upo upp upr ups upu ur- ura urb urc urd uro urp urr urs uru usa usb usc usd uso usp usr uss usu uua uuc uur uus uuu

-ous a-do aaaa aaab aaac aaad aaap aaar aaas aaba aabb aabc aabd aabp aaca aacb aacc aacd aaco aacp aacr aacs aacu aada aadc aads aadu aaoo aapa aapc aapo aaps aara aarc aard aaro aarp aars aaru aasa aasc aasd aass aasu aaup aaus abaa abab abac abad abap abar abas abau abb- abba abbb abbo abbr abbs abca abcb abcc abcd abcp abcr abcs abda abdo abdu aboa abob abod aboo abor abos abou abpa abpc abpd abpp abpr abps abra abrc abro abrs abs- absa absd absp abss absu abua abud abus acaa acab acac acad acap acar acas acba acca accc accd acco accp accs accu acda acdb acdc acdp acds acoa acod acop acor acos acou acpa acpd acpr acps acpu acr- acra acrc acro acrr acrs acsa acsc acsd acss acu- acuo acup acur acus adaa adab adac adad adao adap adar adas adba adbc adcc adcs adda addc addd addo addr adds addu adob adoc adod adoo ador ados adp- adps adra adro adrs adsa adso adsr adss adua adub adur aoba aoca aocs aopo aora aorb aors aosd aosp aoss aous apac apao apap apar apas apba apbr apbs apca apcb apcc apcd apco apcr apcs apda apdd apds apdu apo- apoc apod apoo apop apor apos apou appa appc appd appr apps appu apra aprc apro aprs apsa apso apss apsu apua apuc apud apup apus arab arac arad arap arar aras arau arba arbs arc- arca arco arcs arda ardc ardo ards ardu aroa arob arod