-er -up a-a a-b a-c aaa aab aac aae aak aap aar aas aau ab- aba abb abc abe abk abp abr abs abu ac- aca acb acc ace ack acp acr acs acu aea aeb aec aee aek aep aer aes aeu aka akb akc ake akk akp akr aks aku ap- apa apb apc ape apk app apr aps apu ar- ara arb arc are ark arp arr ars aru as- asa asb asc ase ask asp asr ass asu au- aua aub auc aue auk aup aur aus b-p b-u baa bab bac bae bak bap bar bas bau bba bbb bbc bbe bbk bbp bbr bbs bbu bca bcb bcc bce bck bcp bcr bcs bcu be- bea beb bec bee bek bep ber bes beu bka bkb bkc bke bkk bkp bkr bks bpa bpb bpc bpe bpp bpr bps bpu bra brb bre brk brp brr brs bru bsa bsb bsc bse bsk bsp bsr bss bsu bua bub buc bue buk bup bur bus buu c-- caa cab cac cae cak cap car cas cau cba cbb cbc cbe cbk cbp cbr cbs cbu cca ccb ccc cce cck ccp ccr ccs ccu ce- cea ceb cec cee cek cep cer ces ceu cka ckb ckc cks cpa cpb cpc cpe cpk cpp cpr cps cpu cra crb crc cre crk crp crr crs cru csa csb csc cse csk csp csr css csu cua cub cuc cue cuk cup cur cus cuu eaa eab eac eae eak eap ear eas eau eba ebb ebc ebe ebk ebp ebr ebs ebu ec- eca ecb ecc ece eck ecr ecs ecu eea eeb eec eee eek eep eer ees eka ekb ekc eke ekp ekr eks eku ep- epa epb epc epe epp epr eps epu era erb erc ere erk erp err ers eru es- esa esb esc ese esk esp esr ess esu eu- eua eub euc eue eup eur eus ka- kaa kab kac kae kak kap kar kas kau kba kbb kbc kbe kbk kbp kbr kbs kbu kca kcb kcc kce kck kcp kcr kcs kcu ke- kea keb kec kee kek kep ker kes kkb kkc kke kkk kkp kkr kks kku kpa kpc kpe kpk kpp kpr kps kpu kra krc krk krp krr krs kru ksa ksb ksc kse ksk ksp ksr kss ksu kub kuc kue kuk kup kur kus kuu p-p paa pab pac pae pak pap par pas pau pba pbb pbc pbe pbk pbp pbr pbs pbu pca pcb pcc pce pck pcp pcr pcs pcu pea peb pec pee pek pep per pes peu pka pkb pkc pke pkp pkr pks pku ppa ppb ppc ppe ppk ppp ppr pps ppu pra prb prc pre prk prp prr prs pru ps- psa psb psc pse psk psp psr pss psu pua pub puc pue puk pup pur pus puu ra- raa rab rac rae rak rap rar ras rau rba rbb rbc rbe rbk rbp rbr rbs rbu rca rcb rcc rce rcp rcr rcs rcu re- rea reb rec ree rek rep rer res reu rkb rkc rke rkk rkp rks rku rpa rpb rpc rpe rpk rpp rpr rps rpu rra rrb rrc rrk rrp rrr rrs rru rsa rsb rsc rse rsk rsp rsr rss rsu rua rub ruc rue ruk rup rur rus ruu saa sab sac sae sak sap sar sas sau sba sbb sbc sbe sbk sbp sbr sbs sbu sca scb scc sce sck scp scr scs scu se- sea seb sec see sek sep ser ses seu sk- ska skb skc ske skk skp skr sks sku spa spb spc spe spk spp spr sps spu sr- sra srb src sre srk srp srr srs ss- ssa ssb ssc sse ssk ssp ssr sss ssu sua sub suc sue suk sup sur sus suu ua- uaa uab uac uae uak uap uar uas uau uba ubb ubc ube ubk ubp ubr ubs ubu uca ucb ucc uce uck ucp ucr ucs ucu uea ueb uec uee uep uer ues uka ukb ukc uke ukk ukp ukr uku up- upa upb upc upe upk upp upr ups upu ur- ura urb urc ure urk urp urr urs uru usa usb usc use usk usp usr uss usu uua uuc uue uur uus uuu

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