-al a-a a-b a-c aaa aab aac aad aal aas aau ab- aba abb abc abd abl abs abu ac- aca acb acc acd acl acs acu ad- ada adb adc add adl ads adu al- ala alb alc ald all als alu as- asa asb asc asd asl ass asu au- aua aub auc aud aul aus b-u baa bab bac bad bal bas bau bba bbb bbc bbd bbl bbs bbu bca bcb bcc bcd bcl bcs bcu bda bdb bdc bdd bdl bds bdu bla blb blc bld bll bls blu bsa bsb bsc bsd bsl bss bsu bua bub buc bud bul bus buu c-- caa cab cac cad cal cas cau cba cbb cbc cbd cbl cbs cbu cca ccb ccc ccd ccl ccs ccu cda cdb cdc cdd cdl cds cdu cl- cla clb clc cld cll cls clu csa csb csc csd csl css csu cua cub cuc cud cul cus cuu daa dab dac dad dal das dau dba dbb dbc dbd dbl dbs dbu dca dcb dcc dcd dcl dcs dcu dda ddb ddc ddd ddl dds ddu dl- dla dlb dlc dld dll dls dlu dsa dsb dsc dsd dsl dss dsu dua dub duc dud dul dus la- laa lab lac lad lal las lau lba lbb lbc lbd lbl lbs lbu lca lcb lcc lcd lcl lcs lcu lda ldb ldc ldd ldl lds ldu lla llb llc lld lll lls llu lsa lsb lsc lsd lsl lss lsu lua lub luc lud lul lus luu saa sab sac sad sal sas sau sba sbb sbc sbd sbl sbs sbu sca scb scc scd scl scs scu sda sdb sdc sdd sdl sds sdu sla slb slc sld sll sls slu ss- ssa ssb ssc ssd ssl sss ssu sua sub suc sud sul sus suu ua- uaa uab uac uad ual uas uau uba ubb ubc ubl ubs ubu uca ucb ucc ucd ucl ucs ucu uda udb udc udd udl uds udu ula ulb ulc uld ull uls ulu usa usb usc usd usl uss usu uua uuc uus uuu

aaaa aaab aaac aaad aaal aaas aaba aabb aabc aabd aabl aaca aacb aacc aacd aacl aacs aacu aada aadc aads aadu aala aalc aald aall aals aalu aasa aasc aasd aass aasu aaus abaa abab abac abad abal abas abau abb- abba abbb abbs abca abcb abcc abcd abcl abcs abda abdu abla abls abs- absa absd absl abss absu abua abud abul abus acaa acab acac acad acas acba acbl acca accc accd accs accu acda acdb acdc acds acla aclc acls aclu acsa acsc acsd acsl acss acu- acul acus adaa adab adac adad adal adas adba adbc adcc adcs adda addc addd addl adds addu adls adsa adsl adss adua adub alaa alac alad alal alas alau alb- alba albc albs albu alca alcc alcs ald- alda aldl alds all- alla alll alls allu alsa alsc alua alus asaa asab asac asad asal asas asau asba asbu asc- asca ascb ascc ascl asda asdl asds asla assa assc assd assl asss assu asub asud asus auaa auca audc aul- aula auld aull auls aulu ausa ausd ausu baaa baad baal baas baba babb babs babu bac- baca bacc bacs bada badb badd bads badu bala balc bald ball bals balu basa basc bass basu bau- baud baul bbad bbas bbau bbbb bbbs bbdd bblb bbls bcaa bcas bcbc bcbs bcca bccc bccl bccs bcda bcds bcsa bcsc bcsl bcss bcuc bdbc bddc bdls bdsd blaa blab blac blad blas blau blcu bldc blls blss blub blud blus bsaa bsac bsas bsbd bscs bsdl bslc bssc bssd buad bual buba bubb bubs bubu buca bucc bucs bucu buda budb budd budl buds budu bula bulb buld bull buls bulu busa busc buss busu buus c-cd caaa caab caac caal caas caba cabs cabu cac- caca cacc cada cadc cadd cads cadu cala calc cald call cals calu casa casb casc casd casl cass casu cauc caul caus cbac cbal cbbc cbbs cbca cbcc cbcl cbcs cbcu cbdb cbdc cbds cblb cblc cbsa cbsc cbus ccaa ccab ccac ccad ccas ccba ccbc ccca cccb cccc cccl cccs cccu ccdc ccds ccla cclc ccls ccsa ccsd ccsl ccss ccuc ccus cdaa cdac cdad cdba cdcs cdda cddb cddl cdls cdss clab clad clas clau clcd cldc clsa clsc club clud csaa csab csac csas cscb cscc cscd cscl cscs csda csdb csla csld cslu cssa cssd csua csus cuau cub- cuba cubb cubs cuca cucc cuda cuds cula culb culc culd cull culs cusa cusb cusd cuss cusu daab daad daal daas daau daba dabb dabs dabu daca dacs dada dads dadu dala dall dals dalu dasa dasb dasc dasd dasl dass daub daud daus dbas dbcc dbcs dbls dbsa dbss dbus dcas dcbc dcca dccb dccc dccl dccs dccu dcdb dcds dcls dcsc dcss dddd ddlc ddss ddub dlab dlbd dlcs dsac dsba dsbc dscc dscs dsda dsls dssa dssc duaa duab duad dual duas dub- duba dubb dubc dubs dubu duca ducs duda dudd duds dudu dula dulc dull dulu dusa duul laaa laac laad laal laas laba labs labu laca lacc lacl lacs lacu lada ladd lads ladu lala lald lall lalu lasa lasd lass lasu laub laud laul laus lbcc lbds lbsc lcac lcad lcbc lcca lccc lccs lcdd lcds lcls lcsc lcsd ldls llbs llcc llcs lldb lldc llds lllc llll llud lsbu lscb lscs lsds lsla lssa luas luau luba lubs luca lucs luda ludd lula lull lulu lusa luss luua sa-c saab saac saad saal saas saba sabb sabc sabs sabu saca sacc sacd sacs sacu sada sadb sadc sadd sadl sads sadu sala salc sald sall sals salu sasa sasc sasd sasl sass saua sauc saud saul saus sbaa sbac sbas sbbs sbca sbcc sbcs sbds sbsa sbsd sbus scaa scab scac scad scal scas scba sccc sccl sccs scda scdc scds scl- sclc scls scsa scsc