-th a-a a-b a-c a-t aaa aab aac aae aah aak aao aat aau ab- aba abb abc abe abh abk abo abt abu ac- aca acb acc ace ach ack aco act acu aea aeb aec aee aeh aek aeo aet aeu aha ahb ahc ahe ahh ahk aho aht ahu aka akb akc ake akh akk ako aku aoa aob aoc aoe aoh aok aoo aot aou at- ata atb atc ate ath ato att atu au- aua aub auc aue auh auk auo aut b-u baa bab bac bae bah bak bao bat bau bba bbb bbc bbe bbh bbk bbo bbt bbu bca bcb bcc bce bch bck bco bct bcu be- bea beb bec bee beh bek beo bet beu bha bhb bhc bhe bhh bhk bho bht bhu bka bkb bkc bke bkk bko bkt boa bob boc boe boh bok boo bot bou bta btb btc bte bth btk bto btt btu bua bub buc bue buh buk buo but buu c-- caa cab cac cae cah cak cao cat cau cba cbb cbc cbe cbh cbk cbo cbt cbu cca ccb ccc cce cch cck cco cct ccu ce- cea ceb cec cee ceh cek ceo cet ceu ch- cha chb chc che chh chk cho cht chu cka ckb ckc ckh cko ckt co- coa cob coc coe coh cok coo cot cou cta ctb ctc cte cth ctk cto ctt ctu cua cub cuc cue cuh cuk cuo cut cuu eaa eab eac eae eah eak eao eat eau eba ebb ebc ebe ebh ebk ebo ebt ebu ec- eca ecb ecc ece ech eck eco ect ecu eea eeb eec eee eek eeo eet eha ehb ehc ehe ehh eho eht ehu eka ekb ekc eke ekh eko ekt eku eo- eoa eob eoc eoe eoh eok eoo eot eou eta etb etc ete eth etk eto ett etu eu- eua eub euc eue eut haa hab hac hae hah hak hao hat hau hba hbb hbc hbe hbh hbk hbo hbt hbu hca hcb hcc hce hch hck hco hct he- hea heb hec hee heh hek heo het heu hha hhb hhc hhe hhh hhk hho hht hhu hka hkb hkh hkk hko hkt hku hoa hob hoc hoe hoh hok hoo hot hou hta htb htc hte hth htk hto htt hua hub huc hue huh huk huo hut huu k-t ka- kaa kab kac kae kah kak kao kat kau kba kbb kbc kbe kbh kbk kbo kbu kca kcb kcc kce kch kck kct kcu ke- kea keb kec kee keh kek keo ket kha khe khh khk kho khu kkb kkc kke kkh kkk kkt kku koa kob koc koe koh kok koo kot kou kta ktb ktc kte kth ktk kto ktt ktu kub kuc kue kuh kuk kut kuu oaa oab oac oae oah oak oao oat oau ob- oba obb obc obe obh obk obo obt obu oc- oca ocb occ och ock oco oct ocu oea oeb oec oee oeh oeo oet oha ohc ohe ohh oho oht ohu oka okb okc oke okk oko oku oo- ooa oob ooc ooh ook ooo oot ot- ota otb otc ote oth otk oto ott otu ou- oua ouc oue ouh ouk ouo out taa tab tac tae tah tak tao tat tau tba tbb tbc tbe tbh tbk tbo tbt tbu tca tcb tcc tce tch tck tco tct tcu te- tea teb tec tee teh tek teo tet teu th- tha thb thc the thh thk tho tht thu tka tkb tkc tke tkk tko tkt to- toa tob toc toe toh tok too tot tou tta ttb ttc tte tth ttk tto ttt ttu tua tub tuc tue tuh tuk tuo tut tuu ua- uaa uab uac uae uah uak uao uat uau uba ubb ubc ube ubh ubk ubo ubt ubu uca ucb ucc uce uch uck uco uct ucu uea ueb uec uee ueh uet uha uhb uhc uhe uhh uho uht uhu uka ukb ukc uke ukk uku uoa uob uoc uoe uok uoo uot uta utb utc ute uth utk uto utt utu uua uuc uue uut uuu