a-a a-b a-c a-t aaa aab aac aad aae aak aao aas aat aau aax ab- aba abb abc abd abe abk abo abs abt abu abx ac- aca acb acc acd ace ack aco acs act acu acx ad- ada adb adc add ade adk ado ads adt adu adx aea aeb aec aed aee aek aeo aes aet aeu aex aka akb akc akd ake akk ako aks aku aoa aob aoc aod aoe aok aoo aos aot aou aox as- asa asb asc asd ase ask aso ass ast asu asx at- ata atb atc atd ate ato ats att atu atx au- aua aub auc aud aue auk auo aus aut aux ax- axa axe axk axo axs axt axx b-u baa bab bac bad bae bak bao bas bat bau bax bba bbb bbc bbd bbe bbk bbo bbs bbt bbu bbx bca bcb bcc bcd bce bck bco bcs bct bcu bcx bda bdb bdc bdd bde bdk bdo bds bdt bdu bdx be- bea beb bec bed bee bek beo bes bet beu bex bka bkb bkc bke bkk bko bks bkt bkx boa bob boc bod boe bok boo bos bot bou box bsa bsb bsc bsd bse bsk bso bss bst bsu bsx bta btb btc btd bte btk bto bts btt btu btx bua bub buc bud bue buk buo bus but buu bux bxb bxd bxo bxx c-- caa cab cac cad cae cak cao cas cat cau cax cba cbb cbc cbd cbe cbk cbo cbs cbt cbu cbx cca ccb ccc ccd cce cck cco ccs cct ccu ccx cda cdb cdc cdd cde cdk cdo cds cdt cdu cdx ce- cea ceb cec ced cee cek ceo ces cet ceu cex cka ckb ckc ckd cko cks ckt ckx co- coa cob coc cod coe cok coo cos cot cou cox csa csb csc csd cse csk cso css cst csu csx cta ctb ctc ctd cte ctk cto cts ctt ctu ctx cua cub cuc cud cue cuk cuo cus cut cuu cxc cxk cxo cxs cxt cxx daa dab dac dad dae dak dao das dat dau dax dba dbb dbc dbd dbe dbk dbo dbs dbt dbu dbx dca dcb dcc dcd dce dck dco dcs dct dcu dcx dda ddb ddc ddd dde ddk ddo dds ddt ddu ddx de- dea deb dec ded dee dek deo des det deu dex dka dkb dkc dke dkk dko dks dkt dku dkx doa dob doc dod doe dok doo dos dot dou dox dsa dsb dsc dsd dse dsk dso dss dst dsu dsx dta dtb dtc dtd dte dtk dto dts dtt dtu dtx dua dub duc dud due duk duo dus dut dux dxc dxd dxo dxs dxt dxx eaa eab eac ead eae eak eao eas eat eau eax eba ebb ebc ebd ebe ebk ebo ebs ebt ebu ebx ec- eca ecb ecc ecd ece eck eco ecs ect ecu ecx ed- eda edb edc edd ede edk edo eds edt edu edx eea eeb eec eed eee eek eeo ees eet eex eka ekb ekc ekd eke eko eks ekt eku eo- eoa eob eoc eod eoe eok eoo eos eot eou es- esa esb esc esd ese esk eso ess est esu esx eta etb etc etd ete etk eto ets ett etu etx eu- eua eub euc eud eue eus eut eux ex- exa exc exd exe exo exs ext exu exx k-t ka- kaa kab kac kad kae kak kao kas kat kau kax kba kbb kbc kbd kbe kbk kbo kbs kbu kbx kca kcb kcc kcd kce kck kcs kct kcu kcx kda kdb kdc kde kdk kdo kds kdt kdu kdx ke- kea keb kec ked kee kek keo kes ket kex kkb kkc kke kkk kks kkt kku koa kob koc kod koe kok koo kos kot kou ksa ksb ksc ksd kse ksk kso kss kst ksu kta ktb ktc kte ktk kto kts ktt ktu kub kuc kud kue kuk kus kut kuu kxo oaa oab oac oad oae oak oao oas oat oau oax ob- oba obb obc obd obe obk obo obs obt obu obx oc- oca ocb occ ocd ock oco ocs oct ocu ocx oda odb odc odd ode odo ods odt odu oea oeb oec oed oee oeo oes oet oex oka okb okc okd oke okk oko oks oku oo- ooa oob ooc ood ook ooo oos oot oox os- osa osb osc osd ose osk oso oss ost osu osx ot- ota otb otc otd ote otk oto ots ott otu ou- oua ouc oud oue ouk ouo ous out ox- oxa oxb oxc oxo oxt oxx saa sab sac sad sae sak sao sas sat sau sax sba sbb sbc sbd sbe sbk sbo sbs sbt sbu sbx sca scb scc scd sce sck sco scs sct scu scx sda sdb sdc sdd sde sdk sdo sds sdt sdu se- sea seb sec sed see sek seo ses set seu sex sk- ska skb skc skd ske skk sko sks skt sku skx soa sob soc sod soe sok soo sos sot sou sox ss- ssa ssb ssc ssd sse ssk sso sss sst ssu ssx sta stb stc std ste stk sto sts stt stu stx sua sub suc sud sue suk suo sus sut suu sux sxc sxs sxt sxu t-x taa tab tac tad tae tak tao tas tat tau tax tba tbb tbc tbd tbe tbk tbo tbs tbt tbu tca tcb tcc tcd tce tck tco tcs tct tcu tcx tda tdb tdc tdd tde tdk tdo tds tdt tdu tdx te- tea teb tec ted tee tek teo tes tet teu tex tka tkb tkc tke tkk tko tks tkt to- toa tob toc tod toe tok too tos tot tou tox tsa tsb tsc tsd tse tsk tso tss tst tsu tsx tta ttb