a-a a-b a-c a-t aaa aab aac aad aae aak aao aat aau ab- aba abb abc abd abe abk abo abt abu ac- aca acb acc acd ace ack aco act acu ad- ada adb adc add ade adk ado adt adu aea aeb aec aed aee aek aeo aet aeu aka akb akc akd ake akk ako aku aoa aob aoc aod aoe aok aoo aot aou at- ata atb atc atd ate ato att atu au- aua aub auc aud aue auk auo aut b-u baa bab bac bad bae bak bao bat bau bba bbb bbc bbd bbe bbk bbo bbt bbu bca bcb bcc bcd bce bck bco bct bcu bda bdb bdc bdd bde bdk bdo bdt bdu be- bea beb bec bed bee bek beo bet beu bka bkb bkc bke bkk bko bkt boa bob boc bod boe bok boo bot bou bta btb btc btd bte btk bto btt btu bua bub buc bud bue buk buo but buu c-- caa cab cac cad cae cak cao cat cau cba cbb cbc cbd cbe cbk cbo cbt cbu cca ccb ccc ccd cce cck cco cct ccu cda cdb cdc cdd cde cdk cdo cdt cdu ce- cea ceb cec ced cee cek ceo cet ceu cka ckb ckc ckd cko ckt co- coa cob coc cod coe cok coo cot cou cta ctb ctc ctd cte ctk cto ctt ctu cua cub cuc cud cue cuk cuo cut cuu daa dab dac dad dae dak dao dat dau dba dbb dbc dbd dbe dbk dbo dbt dbu dca dcb dcc dcd dce dck dco dct dcu dda ddb ddc ddd dde ddk ddo ddt ddu de- dea deb dec ded dee dek deo det deu dka dkb dkc dke dkk dko dkt dku doa dob doc dod doe dok doo dot dou dta dtb dtc dtd dte dtk dto dtt dtu dua dub duc dud due duk duo dut eaa eab eac ead eae eak eao eat eau eba ebb ebc ebd ebe ebk ebo ebt ebu ec- eca ecb ecc ecd ece eck eco ect ecu ed- eda edb edc edd ede edk edo edt edu eea eeb eec eed eee eek eeo eet eka ekb ekc ekd eke eko ekt eku eo- eoa eob eoc eod eoe eok eoo eot eou eta etb etc etd ete etk eto ett etu eu- eua eub euc eud eue eut k-t ka- kaa kab kac kad kae kak kao kat kau kba kbb kbc kbd kbe kbk kbo kbu kca kcb kcc kcd kce kck kct kcu kda kdb kdc kde kdk kdo kdt kdu ke- kea keb kec ked kee kek keo ket kkb kkc kke kkk kkt kku koa kob koc kod koe kok koo kot kou kta ktb ktc kte ktk kto ktt ktu kub kuc kud kue kuk kut kuu oaa oab oac oad oae oak oao oat oau ob- oba obb obc obd obe obk obo obt obu oc- oca ocb occ ocd ock oco oct ocu oda odb odc odd ode odo odt odu oea oeb oec oed oee oeo oet oka okb okc okd oke okk oko oku oo- ooa oob ooc ood ook ooo oot ot- ota otb otc otd ote otk oto ott otu ou- oua ouc oud oue ouk ouo out taa tab tac tad tae tak tao tat tau tba tbb tbc tbd tbe tbk tbo tbt tbu tca tcb tcc tcd tce tck tco tct tcu tda tdb tdc tdd tde tdk tdo tdt tdu te- tea teb tec ted tee tek teo tet teu tka tkb tkc tke tkk tko tkt to- toa tob toc tod toe tok too tot tou tta ttb ttc ttd tte ttk tto ttt ttu tua tub tuc tud tue tuk tuo tut tuu ua- uaa uab uac uad uae uak uao uat uau uba ubb ubc ube ubk ubo ubt ubu uca ucb ucc ucd uce uck uco uct ucu uda udb udc udd ude udk udo udt udu uea ueb uec ued uee uet uka ukb ukc uke ukk uku uoa uob uoc uod uoe uok uoo uot uta utb utc utd ute utk uto utt utu uua uuc uue uut uuu

a-ak a-be a-do a-ok aaaa aaab aaac aaad aaae aaba aabb aabc aabd aabt aaca aacb aacc aacd aace aack aaco aact aacu aada aadc aade aadt aadu aaea aaec aaka aake aaku aaoe aaoo aata aatc aatk aatt abaa abab abac abad abae abak abat abau abb- abba abbb abbe abbo abbt abca abcb abcc abcd abct abda abdo abdu abec abed abee abet aboa abob abod abok aboo abot abou abta abtu abua abud abue abuk abut ac-t acaa acab acac acad acae acat acba acca accc accd acce acco acct accu acda acdb acdc acde acdt ace- acea acec aced acek acet ackd acke acoa acod acoe acot acou acta actc acte acto actt actu acu- acue acuo acut adaa adab adac adad adae adak adao adat adba adbc adcc adda addc addd adde addo addu adea adeb adee adeo adet adob adoc adod adoe adok adoo adot adta adua adub adue aduk aeac aecb aect aede aedt aeka aeta aetc aeto aett akaa akae akao akca aked akee akeu akka akko akku akok akot akte akua aoba aoca aoce aoeu aotc aotd aout at-t ataa atab atac atad atae atak atat atca atcc atck atco atdt atea atec ated atee ateo atka atkt atob atoc atod atoe atok atot atta atte atto attu atua atub atuc atuk auaa aube auca auce auct audc aude audo auke aut- aute auto baaa baad baak baat baba babb babe babo babu bac- baca bacc bace back baco bact bada badb badd bade bado badu baed baek bak- baka bake bako bakt baku bata batc bate bato batt batu bau- baud bauk bbad bbau bbbb bbdd bbdo bbeb bbet bcaa bcat bcbc bcca bccc bcda bcde bcec bcet bctc