-al -er -ol -up a-a a-b a-c aaa aab aac aae aal aao aap aar aau ab- aba abb abc abe abl abo abp abr abu ac- aca acb acc ace acl aco acp acr acu aea aeb aec aee ael aeo aep aer aeu al- ala alb alc ale all alo alp alr alu aoa aob aoc aoe aol aoo aop aor aou ap- apa apb apc ape apl apo app apr apu ar- ara arb arc are arl aro arp arr aru au- aua aub auc aue aul auo aup aur b-p b-u baa bab bac bae bal bao bap bar bau bba bbb bbc bbe bbl bbo bbp bbr bbu bca bcb bcc bce bcl bco bcp bcr bcu be- bea beb bec bee bel beo bep ber beu bla blb blc ble bll blo blp blr blu boa bob boc boe bol boo bop bor bou bpa bpb bpc bpe bpl bpo bpp bpr bpu bra brb bre brl bro brp brr bru bua bub buc bue bul buo bup bur buu c-- caa cab cac cae cal cao cap car cau cba cbb cbc cbe cbl cbo cbp cbr cbu cca ccb ccc cce ccl cco ccp ccr ccu ce- cea ceb cec cee cel ceo cep cer ceu cl- cla clb clc cle cll clo clp clr clu co- coa cob coc coe col coo cop cor cou cpa cpb cpc cpe cpl cpo cpp cpr cpu cra crb crc cre crl cro crp crr cru cua cub cuc cue cul cuo cup cur cuu eaa eab eac eae eal eao eap ear eau eba ebb ebc ebe ebl ebo ebp ebr ebu ec- eca ecb ecc ece ecl eco ecr ecu eea eeb eec eee eel eeo eep eer ela elb elc ele ell elo elp elr elu eo- eoa eob eoc eoe eol eoo eop eor eou ep- epa epb epc epe epl epo epp epr epu era erb erc ere erl ero erp err eru eu- eua eub euc eue eul eup eur l-p la- laa lab lac lae lal lao lap lar lau lba lbb lbc lbe lbl lbo lbp lbr lbu lca lcb lcc lce lcl lco lcp lcr lcu lea leb lec lee lel leo lep ler leu lla llb llc lle lll llo llp llr llu loa lob loc loe lol loo lop lor lou lpa lpb lpc lpe lpl lpo lpp lpr lpu lra lrb lrc lro lrp lrr lru lua lub luc lue lul luo lup lur luu oaa oab oac oae oal oao oap oar oau ob- oba obb obc obe obl obo obp obr obu oc- oca ocb occ ocl oco ocp ocr ocu oea oeb oec oee oel oeo oep oer ola olb olc ole oll olo olp olu oo- ooa oob ooc ool ooo oop oor op- opa opb opc ope opl opo opp opr or- ora orb orc ore orl oro orp orr oru ou- oua ouc oue oul ouo oup our p-p paa pab pac pae pal pao pap par pau pba pbb pbc pbe pbl pbo pbp pbr pbu pca pcb pcc pce pcl pco pcp pcr pcu pea peb pec pee pel peo pep per peu pla plb plc ple pll plo plp plr plu poa pob poc poe pol poo pop por pou ppa ppb ppc ppe ppl ppo ppp ppr ppu pra prb prc pre prl pro prp prr pru pua pub puc pue pul pup pur puu ra- raa rab rac rae ral rao rap rar rau rba rbb rbc rbe rbl rbo rbp rbr rbu rca rcb rcc rce rcl rco rcp rcr rcu re- rea reb rec ree rel reo rep rer reu rla rlc rle rll rlo rlp rlr rlu roa rob roc roe rol roo rop ror rou rpa rpb rpc rpe rpl rpo rpp rpr rpu rra rrb rrc rrl rrp rrr rru rua rub ruc rue ruo rup rur ruu ua- uaa uab uac uae ual uao uap uar uau uba ubb ubc ube ubl ubo ubp ubr ubu uca ucb ucc uce ucl uco ucp ucr ucu uea ueb uec uee uel uep uer ula ulb ulc ule ull ulo ulp ulr ulu uoa uob uoc uoe uol uoo uop uor up- upa upb upc upe upo upp upr upu ur- ura urb urc ure url uro urp urr uru uua uuc uue uur uuu

a-be aaaa aaab aaac aaae aaal aaap aaar aaba aabb aabc aabl aabp aaca aacb aacc aace aacl aaco aacp aacr aacu aaea aaec aaep aala aalc aale aall aalo aalu aaoe aaoo aapa aapc aapl aapo aara aarc aare aaro aarp aaru aaup abaa abab abac abae abal abap abar abau abb- abba abbb abbe abbo abbr abca abcb abcc abcl abcp abcr abec abee abel aber abla able ablo aboa abob abol aboo abor abou abpa abpc abpp abpr abra abrc abro abua abue abul acaa acab acac acae acap acar acba acbl acca accc acce acco accp accu ace- acea acec acel acer acla aclc acle aclr aclu acoa acoe acol acop acor acou acpa acpe acpr acpu acr- acra acrc acre acro acrr acu- acue acul acuo acup acur aeac aeap aecb aecl aeer aela aelc aelp aer- aera aerc aero al-p alaa alac alae alal alao alap alar alau alb- alba albc albe albo albu alca alcc alce alco alea alec alee aleo alep aler aleu all- alla alle alll allo allr allu aloa aloc aloe alol aloo alop alor alou alpa alpe alpl alpo alpu alro alua alur aoba aoca aoce aoeu aola aole aopo aora aorb aoul apac apal apao apap apar apba apbr apca apcb apcc apco apcr apea apec apel apep aper apeu apl- apla aple aplp aplu apo- apoc apoe apoo apop apor apou appa appc appl appr appu apra aprc apre apro apua apuc apup arab arac arae aral arap arar arau arba arbe arc- arca arce arco area arec aree