-al a-a a-b a-c aaa aab aac aae aak aal aam aau ab- aba abb abc abe abk abl abm abu ac- aca acb acc ace ack acl acm acu aea aeb aec aee aek ael aem aeu aka akb akc ake akk akl akm aku al- ala alb alc ale alk all alm alu ama amb amc ame amk aml amm amu au- aua aub auc aue auk aul aum b-u baa bab bac bae bak bal bam bau bba bbb bbc bbe bbk bbl bbm bbu bca bcb bcc bce bck bcl bcm bcu be- bea beb bec bee bek bel bem beu bka bkb bkc bke bkk bkl bkm bla blb blc ble blk bll blm blu bma bmb bmc bme bmk bml bmm bmu bua bub buc bue buk bul bum buu c-- caa cab cac cae cak cal cam cau cba cbb cbc cbe cbk cbl cbm cbu cca ccb ccc cce cck ccl ccm ccu ce- cea ceb cec cee cek cel cem ceu cka ckb ckc ckm cl- cla clb clc cle clk cll clm clu cma cmb cmc cme cmk cml cmm cmu cua cub cuc cue cuk cul cum cuu eaa eab eac eae eak eal eam eau eba ebb ebc ebe ebk ebl ebm ebu ec- eca ecb ecc ece eck ecl ecm ecu eea eeb eec eee eek eel eem eka ekb ekc eke ekl eku ela elb elc ele elk ell elm elu em- ema emb emc eme emk eml emm emu eu- eua eub euc eue eul ka- kaa kab kac kae kak kal kam kau kba kbb kbc kbe kbk kbl kbm kbu kca kcb kcc kce kck kcl kcm kcu ke- kea keb kec kee kek kel kem kkb kkc kke kkk kkl kkm kku kl- kla klb klc klm klu kma kmb kmc kme kmk kml kmm kmu kub kuc kue kuk kul kum kuu la- laa lab lac lae lak lal lam lau lba lbb lbc lbe lbk lbl lbm lbu lca lcb lcc lce lck lcl lcm lcu lea leb lec lee lek lel lem leu lka lkb lkl lla llb llc lle llk lll llm llu lma lmb lmc lme lmk lml lmm lmu lua lub luc lue luk lul lum luu maa mab mac mae mak mal mam mau mba mbb mbc mbe mbk mbl mbm mbu mc- mca mcb mcc mce mck mcl mcm mcu mea meb mec mee mek mel mem meu mka mkb mkc mke mkk mkl mkm mku mla mlb mlc mle mlk mll mlm mlu mma mmb mmc mme mmk mml mmm mmu mua mub muc mue muk mul mum muu ua- uaa uab uac uae uak ual uam uau uba ubb ubc ube ubk ubl ubu uca ucb ucc uce uck ucl ucm ucu uea ueb uec uee uel uem uka ukb ukc uke ukk ukl uku ula ulb ulc ule ulk ull ulm ulu um- uma umb umc ume uml umm umu uua uuc uue uum uuu