-al -ol a-a a-b a-c aaa aab aac aaf aah aak aal aao aas ab- aba abb abc abf abh abk abl abo abs ac- aca acb acc acf ach ack acl aco acs af- afa afb afc aff afh afk afl afo afs aha ahb ahc ahf ahh ahk ahl aho ahs aka akb akc akh akk akl ako aks al- ala alb alc alf alh alk all alo als aoa aob aoc aof aoh aok aol aoo aos as- asa asb asc asf ash ask asl aso ass baa bab bac baf bah bak bal bao bas bba bbb bbc bbf bbh bbk bbl bbo bbs bca bcb bcc bcf bch bck bcl bco bcs bfa bfb bfc bff bfh bfl bfo bfs bha bhb bhc bhf bhh bhk bhl bho bhs bka bkb bkc bkf bkk bkl bko bks bla blb blc blf blh blk bll blo bls boa bob boc bof boh bok bol boo bos bsa bsb bsc bsf bsh bsk bsl bso bss c-- caa cab cac caf cah cak cal cao cas cba cbb cbc cbf cbh cbk cbl cbo cbs cca ccb ccc ccf cch cck ccl cco ccs cfa cfb cfc cff cfh cfk cfl cfo cfs ch- cha chb chc chf chh chk chl cho chs cka ckb ckc ckh cko cks cl- cla clb clc clf clh clk cll clo cls co- coa cob coc cof coh cok col coo cos csa csb csc csf csh csk csl cso css faa fab fac faf fah fak fal fao fas fba fbb fbc fbf fbh fbk fbl fbo fbs fca fcb fcc fcf fck fcl fco fcs ffa ffc fff ffh ffk ffl ffo ffs fha fhb fhc fhf fhh fhl fho fhs fka fkb fkc fkf fkk fkl fla flb flc flf fll flo fls foa fob foc fof foh fok fol foo fos fsa fsb fsc fsf fsh fsk fsl fso fss haa hab hac haf hah hak hal hao has hba hbb hbc hbf hbh hbk hbl hbo hbs hca hcb hcc hcf hch hck hcl hco hcs hfa hfb hfc hff hfh hfk hfl hfo hfs hha hhb hhc hhf hhh hhk hhl hho hhs hka hkb hkf hkh hkk hkl hko hks hla hlb hlc hlf hlh hll hlo hls hoa hob hoc hof hoh hok hol hoo hos hsa hsb hsc hsf hsh hsk hsl hss ka- kaa kab kac kaf kah kak kal kao kas kba kbb kbc kbf kbh kbk kbl kbo kbs kca kcb kcc kch kck kcl kcs kfa kfc kff kfh kfo kfs kha khf khh khk kho khs kkb kkc kkh kkk kkl kks kl- kla klb klc klf klh klo kls koa kob koc kof koh kok kol koo kos ksa ksb ksc ksf ksh ksk ksl kso kss la- laa lab lac laf lah lak lal lao las lba lbb lbc lbf lbh lbk lbl lbo lbs lca lcb lcc lcf lch lck lcl lco lcs lfa lfb lfc lff lfh lfk lfl lfo lfs lha lhb lhc lhf lhh lhk lho lhs lka lkb lkh lkl lks lla llb llc llf llk lll llo lls loa lob loc lof loh lok lol loo los lsa lsb lsc lsf lsh lsk lsl lso lss oaa oab oac oaf oah oak oal oao oas ob- oba obb obc obf obh obk obl obo obs oc- oca ocb occ ocf och ock ocl oco ocs of- ofa ofb ofc off ofl ofo ofs oha ohc ohf ohh ohl oho ohs oka okb okc okk okl oko oks ola olb olc olf olk oll olo ols oo- ooa oob ooc oof ooh ook ool ooo oos os- osa osb osc osf osh osk osl oso oss saa sab sac saf sah sak sal sao sas sba sbb sbc sbf sbh sbk sbl sbo sbs sca scb scc scf sch sck scl sco scs sfa sfb sfc sff sfh sfk sfl sfo sfs sh- sha shb shc shf shh shk shl sho shs sk- ska skb skc skf skh skk skl sko sks sla slb slc slf slh slk sll slo sls soa sob soc sof soh sok sol soo sos ss- ssa ssb ssc ssf ssh ssk ssl sso sss

a-ak a-ha a-ok aaaa aaab aaac aaaf aaah aaal aaas aaba aabb aabc aabh aabl aaca aacb aacc aacf aach aack aacl aaco aacs aafa aafb aafc aaff aafl aaha aahk aahl aahs aaka aala aalc aall aalo aals aaoo aasa aasc aasf aass abaa abab abac abaf abak abal abas abb- abba abbb abbo abbs abca abcb abcc abcf abch abcl abcs abff abha abho abhs abla ablo abls aboa abob abof aboh abok abol aboo abos abs- absa absf absl abss acaa acab acac acas acba acbl acca accc accf acch acco accs acfc acfl acfs acha achh achl acho achs acks acla aclc acls acoa acoh acol acos acsa acsc acsl acss afaa afak afao afbs afca afcb afcc afch afcs affa affc affo affs afhs afka afla aflc afoa afol afoo afsa afsb afsc ahab ahac ahah ahal ahas ahfa ahha ahhs ahla ahoa ahok ahsa ahso ahss akaa akah akal akao akas akca akha akhs akka akko aklo akok akos aksa alaa alac alak alal alao alas alb- alba albc albo albs alca alcc alco alcs alfa alfs alha alhs alk- alka alkb alko all- alla allh alll allo alls aloa aloc alof aloh alok alol aloo alos alsa alsc also aoah aoba aoca aocs aoks aola aoss asaa asab asac asaf asah asak asal asao asas asba asbo asc- asca ascb ascc asch ascl asco asfa asha ashk ashs aska asko asks asla aslo asob asoc asof asok asos assa assc assh assk assl asso asss baaa baaf baah baak baal baas baba babb babo babs bac- baca bacc bach back baco bacs bafc baff bafo baha bahl baho bahs bak- baka bakh bakl bako baks bala balc balf balk ball balo bals