-al -ol -up a-a a-b a-c aaa aab aac aal aao aap aar aas aau ab- aba abb abc abl abo abp abr abs abu ac- aca acb acc acl aco acp acr acs acu al- ala alb alc all alo alp alr als alu aoa aob aoc aol aoo aop aor aos aou ap- apa apb apc apl apo app apr aps apu ar- ara arb arc arl aro arp arr ars aru as- asa asb asc asl aso asp asr ass asu au- aua aub auc aul auo aup aur aus b-p b-u baa bab bac bal bao bap bar bas bau bba bbb bbc bbl bbo bbp bbr bbs bbu bca bcb bcc bcl bco bcp bcr bcs bcu bla blb blc bll blo blp blr bls blu boa bob boc bol boo bop bor bos bou bpa bpb bpc bpl bpo bpp bpr bps bpu bra brb brl bro brp brr brs bru bsa bsb bsc bsl bso bsp bsr bss bsu bua bub buc bul buo bup bur bus buu c-- caa cab cac cal cao cap car cas cau cba cbb cbc cbl cbo cbp cbr cbs cbu cca ccb ccc ccl cco ccp ccr ccs ccu cl- cla clb clc cll clo clp clr cls clu co- coa cob coc col coo cop cor cos cou cpa cpb cpc cpl cpo cpp cpr cps cpu cra crb crc crl cro crp crr crs cru csa csb csc csl cso csp csr css csu cua cub cuc cul cuo cup cur cus cuu l-p la- laa lab lac lal lao lap lar las lau lba lbb lbc lbl lbo lbp lbr lbs lbu lca lcb lcc lcl lco lcp lcr lcs lcu lla llb llc lll llo llp llr lls llu loa lob loc lol loo lop lor los lou lpa lpb lpc lpl lpo lpp lpr lps lpu lra lrb lrc lro lrp lrr lrs lru lsa lsb lsc lsl lso lsp lsr lss lsu lua lub luc lul luo lup lur lus luu oaa oab oac oal oao oap oar oas oau ob- oba obb obc obl obo obp obr obs obu oc- oca ocb occ ocl oco ocp ocr ocs ocu ola olb olc oll olo olp ols olu oo- ooa oob ooc ool ooo oop oor oos op- opa opb opc opl opo opp opr ops or- ora orb orc orl oro orp orr ors oru os- osa osb osc osl oso osp osr oss osu ou- oua ouc oul ouo oup our ous p-p paa pab pac pal pao pap par pas pau pba pbb pbc pbl pbo pbp pbr pbs pbu pca pcb pcc pcl pco pcp pcr pcs pcu pla plb plc pll plo plp plr pls plu poa pob poc pol poo pop por pos pou ppa ppb ppc ppl ppo ppp ppr pps ppu pra prb prc prl pro prp prr prs pru ps- psa psb psc psl pso psp psr pss psu pua pub puc pul pup pur pus puu ra- raa rab rac ral rao rap rar ras rau rba rbb rbc rbl rbo rbp rbr rbs rbu rca rcb rcc rcl rco rcp rcr rcs rcu rla rlc rll rlo rlp rlr rls rlu roa rob roc rol roo rop ror ros rou rpa rpb rpc rpl rpo rpp rpr rps rpu rra rrb rrc rrl rrp rrr rrs rru rsa rsb rsc rsl rso rsp rsr rss rsu rua rub ruc ruo rup rur rus ruu saa sab sac sal sao sap sar sas sau sba sbb sbc sbl sbo sbp sbr sbs sbu sca scb scc scl sco scp scr scs scu sla slb slc sll slo slp slr sls slu soa sob soc sol soo sop sor sos sou spa spb spc spl spo spp spr sps spu sr- sra srb src srl sro srp srr srs ss- ssa ssb ssc ssl sso ssp ssr sss ssu sua sub suc sul suo sup sur sus suu ua- uaa uab uac ual uao uap uar uas uau uba ubb ubc ubl ubo ubp ubr ubs ubu uca ucb ucc ucl uco ucp ucr ucs ucu ula ulb ulc ull ulo ulp ulr uls ulu uoa uob uoc uol uoo uop uor uos up- upa upb upc upo upp upr ups upu ur- ura urb urc url uro urp urr urs uru usa usb usc usl uso usp usr uss usu uua uuc uur uus uuu

-ous aaaa aaab aaac aaal aaap aaar aaas aaba aabb aabc aabl aabp aaca aacb aacc aacl aaco aacp aacr aacs aacu aala aalc aall aalo aals aalu aaoo aapa aapc aapl aapo aaps aara aarc aaro aarp aars aaru aasa aasc aass aasu aaup aaus abaa abab abac abal abap abar abas abau abb- abba abbb abbo abbr abbs abca abcb abcc abcl abcp abcr abcs abla ablo abls aboa abob abol aboo abor abos abou abpa abpc abpp abpr abps abra abrc abro abrs abs- absa absl absp abss absu abua abul abus acaa acab acac acap acar acas acba acbl acca accc acco accp accs accu acla aclc aclr acls aclu acoa acol acop acor acos acou acpa acpr acps acpu acr- acra acrc acro acrr acrs acsa acsc acsl acss acu- acul acuo acup acur acus al-p alaa alac alal alao alap alar alas alau alb- alba albc albo albs albu alca alcc alco alcs all- alla alll allo allr alls allu aloa aloc alol aloo alop alor alos alou alpa alpl alpo alps alpu alro alsa alsc also alua alur alus aoba aoca aocs aola aopo aora aorb aors aosp aoss aoul aous apac apal apao apap apar apas apba apbr apbs apca apcb apcc apco apcr apcs apl- apla aplp apls aplu apo- apoc apoo apop apor apos apou appa appc appl appr apps appu apra aprc apro aprs apsa apsl apso apss apsu apua apuc apup apus arab arac aral arap arar aras arau arba arbs arc- arca