-al -er a-a a-b a-c aaa aab aac aae aak aal aam aar aas aau ab- aba abb abc abe abk abl abm abr abs abu ac- aca acb acc ace ack acl acm acr acs acu aea aeb aec aee aek ael aem aer aes aeu aka akb akc ake akk akl akm akr aks aku al- ala alb alc ale alk all alm alr als alu ama amb amc ame amk aml amm amr ams amu ar- ara arb arc are ark arl arm arr ars aru as- asa asb asc ase ask asl asm asr ass asu au- aua aub auc aue auk aul aum aur aus b-u baa bab bac bae bak bal bam bar bas bau bba bbb bbc bbe bbk bbl bbm bbr bbs bbu bca bcb bcc bce bck bcl bcm bcr bcs bcu be- bea beb bec bee bek bel bem ber bes beu bka bkb bkc bke bkk bkl bkm bkr bks bla blb blc ble blk bll blm blr bls blu bma bmb bmc bme bmk bml bmm bmr bms bmu bra brb bre brk brl brm brr brs bru bsa bsb bsc bse bsk bsl bsm bsr bss bsu bua bub buc bue buk bul bum bur bus buu c-- caa cab cac cae cak cal cam car cas cau cba cbb cbc cbe cbk cbl cbm cbr cbs cbu cca ccb ccc cce cck ccl ccm ccr ccs ccu ce- cea ceb cec cee cek cel cem cer ces ceu cka ckb ckc ckm cks cl- cla clb clc cle clk cll clm clr cls clu cma cmb cmc cme cmk cml cmm cmr cms cmu cra crb crc cre crk crl crm crr crs cru csa csb csc cse csk csl csm csr css csu cua cub cuc cue cuk cul cum cur cus cuu eaa eab eac eae eak eal eam ear eas eau eba ebb ebc ebe ebk ebl ebm ebr ebs ebu ec- eca ecb ecc ece eck ecl ecm ecr ecs ecu eea eeb eec eee eek eel eem eer ees eka ekb ekc eke ekl ekr eks eku ela elb elc ele elk ell elm elr els elu em- ema emb emc eme emk eml emm emr ems emu era erb erc ere erk erl erm err ers eru es- esa esb esc ese esk esl esm esr ess esu eu- eua eub euc eue eul eur eus ka- kaa kab kac kae kak kal kam kar kas kau kba kbb kbc kbe kbk kbl kbm kbr kbs kbu kca kcb kcc kce kck kcl kcm kcr kcs kcu ke- kea keb kec kee kek kel kem ker kes kkb kkc kke kkk kkl kkm kkr kks kku kl- kla klb klc klm klr kls klu kma kmb kmc kme kmk kml kmm kms kmu kra krc krk krl krr krs kru ksa ksb ksc kse ksk ksl ksm ksr kss ksu kub kuc kue kuk kul kum kur kus kuu la- laa lab lac lae lak lal lam lar las lau lba lbb lbc lbe lbk lbl lbm lbr lbs lbu lca lcb lcc lce lck lcl lcm lcr lcs lcu lea leb lec lee lek lel lem ler les leu lka lkb lkl lkr lks lla llb llc lle llk lll llm llr lls llu lma lmb lmc lme lmk lml lmm lmr lms lmu lra lrb lrc lrk lrm lrr lrs lru lsa lsb lsc lse lsk lsl lsm lsr lss lsu lua lub luc lue luk lul lum lur lus luu m-r maa mab mac mae mak mal mam mar mas mau mba mbb mbc mbe mbk mbl mbm mbr mbs mbu mc- mca mcb mcc mce mck mcl mcm mcr mcs mcu mea meb mec mee mek mel mem mer mes meu mka mkb mkc mke mkk mkl mkm mkr mks mku mla mlb mlc mle mlk mll mlm mlr mls mlu mma mmb mmc mme mmk mml mmm mmr mms mmu mra mrb mrc mre mrk mrl mrm mrr mrs mru msa msb msc mse msk msl msm msr mss msu mua mub muc mue muk mul mum mur mus muu ra- raa rab rac rae rak ral ram rar ras rau rba rbb rbc rbe rbk rbl rbm rbr rbs rbu rca rcb rcc rce rcl rcm rcr rcs rcu re- rea reb rec ree rek rel rem rer res reu rkb rkc rke rkk rkm rks rku rla rlc rle rll rlm rlr rls rlu rma rmb rmc rme rml rmm rmr rms rra rrb rrc rrk rrl rrm rrr rrs rru rsa rsb rsc rse rsk rsl rsm rsr rss rsu rua rub ruc rue ruk rum rur rus ruu saa sab sac sae sak sal sam sar sas sau sba sbb sbc sbe sbk sbl sbm sbr sbs sbu sca scb scc sce sck scl scm scr scs scu se- sea seb sec see sek sel sem ser ses seu sk- ska skb skc ske skk skl skm skr sks sku sla slb slc sle slk sll slm slr sls slu sma smb smc sme smk sml smm smr sms smu sr- sra srb src sre srk srl srm srr srs ss- ssa ssb ssc sse ssk ssl ssm ssr sss ssu sua sub suc sue suk sul sum sur sus suu ua- uaa uab uac uae uak ual uam uar uas uau uba ubb ubc ube ubk ubl ubr ubs ubu uca ucb ucc uce uck ucl ucm ucr ucs ucu uea ueb uec uee uel uem uer ues uka ukb ukc uke ukk ukl ukr uku ula ulb ulc ule ulk ull ulm ulr uls ulu um- uma umb umc ume uml umm umr ums umu ur- ura urb urc ure urk url urm urr urs uru usa usb usc use usk usl usm usr uss usu uua uuc uue uum uur uus uuu