-al a-a a-b a-c aaa aab aac aae aaf aag aak aal aan aas aau ab- aba abb abc abe abf abg abk abl abn abs abu ac- aca acb acc ace acf acg ack acl acn acs acu aea aeb aec aee aef aeg aek ael aen aes aeu af- afa afb afc afe aff afg afk afl afn afs afu ag- aga agb agc age agf agg agk agl agn ags agu aka akb akc ake akg akk akl akn aks aku al- ala alb alc ale alf alg alk all aln als alu an- ana anb anc ane anf ang ank anl ann ans anu as- asa asb asc ase asf asg ask asl asn ass asu au- aua aub auc aue auf aug auk aul aun aus b-u baa bab bac bae baf bag bak bal ban bas bau bba bbb bbc bbe bbf bbg bbk bbl bbn bbs bbu bca bcb bcc bce bcf bcg bck bcl bcn bcs bcu be- bea beb bec bee bef beg bek bel ben bes beu bfa bfb bfc bfe bff bfg bfl bfn bfs bfu bga bgb bgc bge bgf bgg bgk bgl bgn bgs bgu bka bkb bkc bke bkf bkg bkk bkl bkn bks bla blb blc ble blf blg blk bll bln bls blu bna bnb bnc bne bnf bng bnk bnl bnn bns bnu bsa bsb bsc bse bsf bsg bsk bsl bsn bss bsu bua bub buc bue buf bug buk bul bun bus buu c-- caa cab cac cae caf cag cak cal can cas cau cba cbb cbc cbe cbf cbg cbk cbl cbn cbs cbu cca ccb ccc cce ccf ccg cck ccl ccn ccs ccu ce- cea ceb cec cee cef ceg cek cel cen ces ceu cfa cfb cfc cfe cff cfg cfk cfl cfn cfs cfu cga cgb cgc cge cgg cgl cgn cgs cgu cka ckb ckc cks cl- cla clb clc cle clf clg clk cll cln cls clu cn- cna cnb cnc cne cnf cng cnl cnn cns cnu csa csb csc cse csf csg csk csl csn css csu cua cub cuc cue cuf cug cuk cul cun cus cuu eaa eab eac eae eaf eag eak eal ean eas eau eba ebb ebc ebe ebf ebg ebk ebl ebn ebs ebu ec- eca ecb ecc ece ecf ecg eck ecl ecn ecs ecu eea eeb eec eee eef eeg eek eel een ees ef- efa efb efc efe eff efg efl efs ega egb egc ege egf egg egl egn egs egu eka ekb ekc eke ekf ekg ekl eks eku ela elb elc ele elf elg elk ell eln els elu en- ena enb enc ene enf eng enk enl enn ens enu es- esa esb esc ese esf esg esk esl esn ess esu eu- eua eub euc eue euf eug eul eun eus faa fab fac fae faf fag fak fal fan fas fau fba fbb fbc fbe fbf fbg fbk fbl fbn fbs fbu fca fcb fcc fce fcf fcg fck fcl fcn fcs fcu fea feb fec fee fef feg fek fel fen fes feu ffa ffc ffe fff ffg ffk ffl ffn ffs ffu fga fgb fgc fge fgf fgg fgl fgn fgs fka fkb fkc fkf fkg fkk fkl fla flb flc fle flf flg fll fln fls flu fna fnb fnc fne fnf fng fnk fnl fnn fns fnu fsa fsb fsc fse fsf fsg fsk fsl fsn fss fsu fua fub fue fuf fug fuk ful fun fus fuu gaa gab gac gae gaf gag gak gal gan gas gau gba gbc gbe gbf gbg gbk gbl gbn gbs gbu gca gcb gcc gce gcf gcg gck gcl gcn gcs gcu ge- gea geb gec gee gef geg gek gel gen ges geu gfa gfb gfc gfe gff gfk gfl gfs gga ggb ggc ggg ggn ggs ggu gka gkb gkn gks gla glb glc gle glf glg glk gll gln gls glu gna gnb gnc gne gnf gnl gnn gns gnu gsa gsb gsc gse gsf gsg gsk gsl gsn gss gsu gu- gua gub guc gue guf gug guk gul gun gus guu ka- kaa kab kac kae kaf kag kak kal kan kas kau kba kbb kbc kbe kbf kbk kbl kbn kbs kbu kca kcb kcc kce kcg kck kcl kcn kcs kcu ke- kea keb kec kee kef keg kek kel ken kes kfa kfc kff kfg kfs kfu kga kgb kgc kgf kgl kgs kgu kkb kkc kke kkk kkl kkn kks kku kl- kla klb klc klf klg kls klu kn- kna knc kne knf kng knk knl knn knu ksa ksb ksc kse ksf ksg ksk ksl ksn kss ksu kub kuc kue kug kuk kul kun kus kuu la- laa lab lac lae laf lag lak lal lan las lau lba lbb lbc lbe lbf lbg lbk lbl lbs lbu lca lcb lcc lce lcf lcg lck lcl lcn lcs lcu lea leb lec lee lef leg lek lel len les leu lfa lfb lfc lfe lff lfg lfk lfl lfn lfs lfu lga lgb lgc lge lgf lgg lgk lgl lgn lgs lgu lka lkb lkg lkl lks lla llb llc lle llf llg llk lll lln lls llu lna lnb lnc lne lng lnk lnl lnn lns lnu lsa lsb lsc lse lsf lsg lsk lsl lsn lss lsu lua lub luc lue luf lug luk lul lun lus luu naa nab nac nae naf nag nak nal nan nas nau nba nbb nbc nbe nbf nbg nbk nbl nbn nbs nbu nca ncb ncc nce ncf ncg nck ncl ncn ncs ncu ne- nea neb nec nee nef neg nek nel nen nes neu nfa nfb nfc nfe nff nfk nfl nfn nfs nfu nga ngb ngc nge ngf ngg ngk ngl ngn ngs ngu nka nkc nke nkf nkk nkn nks nku nla nlb nlc nle nlf nlg nlk nll