-al a-a a-b a-c aaa aab aac aae aaf aal aas aau ab- aba abb abc abe abf abl abs abu ac- aca acb acc ace acf acl acs acu aea aeb aec aee aef ael aes aeu af- afa afb afc afe aff afl afs afu al- ala alb alc ale alf all als alu as- asa asb asc ase asf asl ass asu au- aua aub auc aue auf aul aus b-u baa bab bac bae baf bal bas bau bba bbb bbc bbe bbf bbl bbs bbu bca bcb bcc bce bcf bcl bcs bcu be- bea beb bec bee bef bel bes beu bfa bfb bfc bfe bff bfl bfs bfu bla blb blc ble blf bll bls blu bsa bsb bsc bse bsf bsl bss bsu bua bub buc bue buf bul bus buu c-- caa cab cac cae caf cal cas cau cba cbb cbc cbe cbf cbl cbs cbu cca ccb ccc cce ccf ccl ccs ccu ce- cea ceb cec cee cef cel ces ceu cfa cfb cfc cfe cff cfl cfs cfu cl- cla clb clc cle clf cll cls clu csa csb csc cse csf csl css csu cua cub cuc cue cuf cul cus cuu eaa eab eac eae eaf eal eas eau eba ebb ebc ebe ebf ebl ebs ebu ec- eca ecb ecc ece ecf ecl ecs ecu eea eeb eec eee eef eel ees ef- efa efb efc efe eff efl efs ela elb elc ele elf ell els elu es- esa esb esc ese esf esl ess esu eu- eua eub euc eue euf eul eus faa fab fac fae faf fal fas fau fba fbb fbc fbe fbf fbl fbs fbu fca fcb fcc fce fcf fcl fcs fcu fea feb fec fee fef fel fes feu ffa ffc ffe fff ffl ffs ffu fla flb flc fle flf fll fls flu fsa fsb fsc fse fsf fsl fss fsu fua fub fue fuf ful fus fuu la- laa lab lac lae laf lal las lau lba lbb lbc lbe lbf lbl lbs lbu lca lcb lcc lce lcf lcl lcs lcu lea leb lec lee lef lel les leu lfa lfb lfc lfe lff lfl lfs lfu lla llb llc lle llf lll lls llu lsa lsb lsc lse lsf lsl lss lsu lua lub luc lue luf lul lus luu saa sab sac sae saf sal sas sau sba sbb sbc sbe sbf sbl sbs sbu sca scb scc sce scf scl scs scu se- sea seb sec see sef sel ses seu sfa sfb sfc sfe sff sfl sfs sfu sla slb slc sle slf sll sls slu ss- ssa ssb ssc sse ssf ssl sss ssu sua sub suc sue suf sul sus suu ua- uaa uab uac uae uaf ual uas uau uba ubb ubc ube ubf ubl ubs ubu uca ucb ucc uce ucf ucl ucs ucu uea ueb uec uee uef uel ues ufa ufc ufe uff ufl ufs ufu ula ulb ulc ule ulf ull uls ulu usa usb usc use usf usl uss usu uua uuc uue uus uuu

-ase a-be a-fu aaaa aaab aaac aaae aaaf aaal aaas aaba aabb aabc aabl aaca aacb aacc aace aacf aacl aacs aacu aaea aaec aaes aafa aafb aafc aaff aafl aala aalc aale aall aals aalu aasa aasc aase aasf aass aasu aaus abaa abab abac abae abaf abal abas abau abb- abba abbb abbe abbs abca abcb abcc abcf abcl abcs abec abee abel abes abff abla able abls abs- absa abse absf absl abss absu abua abue abuf abul abus acaa acab acac acae acas acba acbl acca accc acce accf accs accu ace- acea acec acel aces acfc acfe acfl acfs acla aclc acle acls aclu acsa acsc acse acsl acss acu- acue acuf acul acus aeac aeaf aeas aebs aecb aecl aela aelc aesc aess afaa afbs afca afcb afcc afcs afcu afee afel afes affa affc affs afla aflc afle afsa afsb afsc afua afue afus alaa alac alae alal alas alau alb- alba albc albe albs albu alca alcc alce alcs alea alec alee alef ales aleu alfa alfe alfs all- alla alle alll alls allu alsa alsc alse alua aluf alus asaa asab asac asae asaf asal asas asau asba asbu asc- asca ascb ascc asce ascl asea asec asee asel ases asfa asla asle assa assc asse assl asss assu asub asue asus auaa aube auca auce auel aufc aufe aufs aul- aula aule aulf aull auls aulu ausa ause ausu baaa baaf baal baas baba babb babe babs babu bac- baca bacc bace bacs bael baes bafc baff bala balc bale balf ball bals balu basa basc base basf bass basu bau- bauf baul bbas bbau bbbb bbbs bbeb bbfc bblb bbls bcaa bcas bcbc bcbs bcca bccc bccl bccs bcec bces bcfc bcsa bcsc bcsl bcss bcuc beaf beal beas beau beba bebb bebe beca becs becu beeb beef beel bees befa befe beff bela bele bell bels belu bes- besa bese bess bfas bfca bfcs bffl bffs blaa blab blac blae blas blau blcu blea bleb blee bles bleu blfc blls blss blub blue bluf blus bsaa bsac bsas bscs bsea bseb bsec bsee bses bsfa bsfc bsff bsfs bslc bssc bsse bual buba bubb bube bubs bubu buca bucc buce bucs bucu buea buel bueu bufc bufe buff bula bulb bule bull buls bulu busa busc buse buss busu buus caaa caab caac caaf caal caas caba cabe cabf cabs cabu cac- caca cacc cace caec caes caeu cafa cafb cafc cafe caff cafl cafs cafu cala calc cale calf call cals calu casa casb casc case casl cass casu cauc cauf caul caus cbac cbal cbbc cbbs cbca cbcc cbce cbcl cbcs cbcu cbea cbec cbee cbef cbfb cbfc cblb cblc cbsa cbsc cbse cbus ccaa ccab ccac ccaf ccas ccba ccbc ccca cccb cccc cccf cccl cccs cccu ccee ccel ccfa ccfc