-al -er -up a-a a-b a-c aaa aab aac aae aak aal aap aar aau ab- aba abb abc abe abk abl abp abr abu ac- aca acb acc ace ack acl acp acr acu aea aeb aec aee aek ael aep aer aeu aka akb akc ake akk akl akp akr aku al- ala alb alc ale alk all alp alr alu ap- apa apb apc ape apk apl app apr apu ar- ara arb arc are ark arl arp arr aru au- aua aub auc aue auk aul aup aur b-p b-u baa bab bac bae bak bal bap bar bau bba bbb bbc bbe bbk bbl bbp bbr bbu bca bcb bcc bce bck bcl bcp bcr bcu be- bea beb bec bee bek bel bep ber beu bka bkb bkc bke bkk bkl bkp bkr bla blb blc ble blk bll blp blr blu bpa bpb bpc bpe bpl bpp bpr bpu bra brb bre brk brl brp brr bru bua bub buc bue buk bul bup bur buu c-- caa cab cac cae cak cal cap car cau cba cbb cbc cbe cbk cbl cbp cbr cbu cca ccb ccc cce cck ccl ccp ccr ccu ce- cea ceb cec cee cek cel cep cer ceu cka ckb ckc cl- cla clb clc cle clk cll clp clr clu cpa cpb cpc cpe cpk cpl cpp cpr cpu cra crb crc cre crk crl crp crr cru cua cub cuc cue cuk cul cup cur cuu eaa eab eac eae eak eal eap ear eau eba ebb ebc ebe ebk ebl ebp ebr ebu ec- eca ecb ecc ece eck ecl ecr ecu eea eeb eec eee eek eel eep eer eka ekb ekc eke ekl ekp ekr eku ela elb elc ele elk ell elp elr elu ep- epa epb epc epe epl epp epr epu era erb erc ere erk erl erp err eru eu- eua eub euc eue eul eup eur ka- kaa kab kac kae kak kal kap kar kau kba kbb kbc kbe kbk kbl kbp kbr kbu kca kcb kcc kce kck kcl kcp kcr kcu ke- kea keb kec kee kek kel kep ker kkb kkc kke kkk kkl kkp kkr kku kl- kla klb klc klr klu kpa kpc kpe kpk kpl kpp kpr kpu kra krc krk krl krp krr kru kub kuc kue kuk kul kup kur kuu l-p la- laa lab lac lae lak lal lap lar lau lba lbb lbc lbe lbk lbl lbp lbr lbu lca lcb lcc lce lck lcl lcp lcr lcu lea leb lec lee lek lel lep ler leu lka lkb lkl lkp lkr lla llb llc lle llk lll llp llr llu lpa lpb lpc lpe lpk lpl lpp lpr lpu lra lrb lrc lrk lrp lrr lru lua lub luc lue luk lul lup lur luu p-p paa pab pac pae pak pal pap par pau pba pbb pbc pbe pbk pbl pbp pbr pbu pca pcb pcc pce pck pcl pcp pcr pcu pea peb pec pee pek pel pep per peu pka pkb pkc pke pkl pkp pkr pku pla plb plc ple plk pll plp plr plu ppa ppb ppc ppe ppk ppl ppp ppr ppu pra prb prc pre prk prl prp prr pru pua pub puc pue puk pul pup pur puu ra- raa rab rac rae rak ral rap rar rau rba rbb rbc rbe rbk rbl rbp rbr rbu rca rcb rcc rce rcl rcp rcr rcu re- rea reb rec ree rek rel rep rer reu rkb rkc rke rkk rkp rku rla rlc rle rll rlp rlr rlu rpa rpb rpc rpe rpk rpl rpp rpr rpu rra rrb rrc rrk rrl rrp rrr rru rua rub ruc rue ruk rup rur ruu ua- uaa uab uac uae uak ual uap uar uau uba ubb ubc ube ubk ubl ubp ubr ubu uca ucb ucc uce uck ucl ucp ucr ucu uea ueb uec uee uel uep uer uka ukb ukc uke ukk ukl ukp ukr uku ula ulb ulc ule ulk ull ulp ulr ulu up- upa upb upc upe upk upp upr upu ur- ura urb urc ure urk url urp urr uru uua uuc uue uur uuu