-th a-a a-b a-c a-t aaa aab aac aae aah aao aas aat aau ab- aba abb abc abe abh abo abs abt abu ac- aca acb acc ace ach aco acs act acu aea aeb aec aee aeh aeo aes aet aeu aha ahb ahc ahe ahh aho ahs aht ahu aoa aob aoc aoe aoh aoo aos aot aou as- asa asb asc ase ash aso ass ast asu at- ata atb atc ate ath ato ats att atu au- aua aub auc aue auh auo aus aut b-u baa bab bac bae bah bao bas bat bau bba bbb bbc bbe bbh bbo bbs bbt bbu bca bcb bcc bce bch bco bcs bct bcu be- bea beb bec bee beh beo bes bet beu bha bhb bhc bhe bhh bho bhs bht bhu boa bob boc boe boh boo bos bot bou bsa bsb bsc bse bsh bso bss bst bsu bta btb btc bte bth bto bts btt btu bua bub buc bue buh buo bus but buu c-- caa cab cac cae cah cao cas cat cau cba cbb cbc cbe cbh cbo cbs cbt cbu cca ccb ccc cce cch cco ccs cct ccu ce- cea ceb cec cee ceh ceo ces cet ceu ch- cha chb chc che chh cho chs cht chu co- coa cob coc coe coh coo cos cot cou csa csb csc cse csh cso css cst csu cta ctb ctc cte cth cto cts ctt ctu cua cub cuc cue cuh cuo cus cut cuu eaa eab eac eae eah eao eas eat eau eba ebb ebc ebe ebh ebo ebs ebt ebu ec- eca ecb ecc ece ech eco ecs ect ecu eea eeb eec eee eeo ees eet eha ehb ehc ehe ehh eho ehs eht ehu eo- eoa eob eoc eoe eoh eoo eos eot eou es- esa esb esc ese esh eso ess est esu eta etb etc ete eth eto ets ett etu eu- eua eub euc eue eus eut haa hab hac hae hah hao has hat hau hba hbb hbc hbe hbh hbo hbs hbt hbu hca hcb hcc hce hch hco hcs hct he- hea heb hec hee heh heo hes het heu hha hhb hhc hhe hhh hho hhs hht hhu hoa hob hoc hoe hoh hoo hos hot hou hsa hsb hsc hse hsh hss hst hsu hta htb htc hte hth hto hts htt hua hub huc hue huh huo hus hut huu oaa oab oac oae oah oao oas oat oau ob- oba obb obc obe obh obo obs obt obu oc- oca ocb occ och oco ocs oct ocu oea oeb oec oee oeh oeo oes oet oha ohc ohe ohh oho ohs oht ohu oo- ooa oob ooc ooh ooo oos oot os- osa osb osc ose osh oso oss ost osu ot- ota otb otc ote oth oto ots ott otu ou- oua ouc oue ouh ouo ous out saa sab sac sae sah sao sas sat sau sba sbb sbc sbe sbh sbo sbs sbt sbu sca scb scc sce sch sco scs sct scu se- sea seb sec see seh seo ses set seu sh- sha shb shc she shh sho shs sht shu soa sob soc soe soh soo sos sot sou ss- ssa ssb ssc sse ssh sso sss sst ssu sta stb stc ste sth sto sts stt stu sua sub suc sue suh suo sus sut suu taa tab tac tae tah tao tas tat tau tba tbb tbc tbe tbh tbo tbs tbt tbu tca tcb tcc tce tch tco tcs tct tcu te- tea teb tec tee teh teo tes tet teu th- tha thb thc the thh tho ths tht thu to- toa tob toc toe toh too tos tot tou tsa tsb tsc tse tsh tso tss tst tsu tta ttb ttc tte tth tto tts ttt ttu tua tub tuc tue tuh tuo tus tut tuu ua- uaa uab uac uae uah uao uas uat uau uba ubb ubc ube ubh ubo ubs ubt ubu uca ucb ucc uce uch uco ucs uct ucu uea ueb uec uee ueh ues uet uha uhb uhc uhe uhh uho uhs uht uhu uoa uob uoc uoe uoo uos uot usa usb usc use ush uso uss ust usu uta utb utc ute uth uto uts utt utu uua uuc uue uus uut uuu