-th b-u bbb bbc bbe bbh bbo bbs bbt bbu bbx bcb bcc bce bch bco bcs bct bcu bcx be- beb bec bee beh beo bes bet beu bex bhb bhc bhe bhh bho bhs bht bhu bhx bob boc boe boh boo bos bot bou box bsb bsc bse bsh bso bss bst bsu bsx btb btc bte bth bto bts btt btu btx bub buc bue buh buo bus but buu bux bxb bxo bxx c-- cbb cbc cbe cbh cbo cbs cbt cbu cbx ccb ccc cce cch cco ccs cct ccu ccx ce- ceb cec cee ceh ceo ces cet ceu cex ch- chb chc che chh cho chs cht chu chx co- cob coc coe coh coo cos cot cou cox csb csc cse csh cso css cst csu csx ctb ctc cte cth cto cts ctt ctu ctx cub cuc cue cuh cuo cus cut cuu cxc cxh cxo cxs cxt cxx ebb ebc ebe ebh ebo ebs ebt ebu ebx ec- ecb ecc ece ech eco ecs ect ecu ecx eeb eec eee eeo ees eet eex ehb ehc ehe ehh eho ehs eht ehu eo- eob eoc eoe eoh eoo eos eot eou es- esb esc ese esh eso ess est esu esx etb etc ete eth eto ets ett etu etx eu- eub euc eue eus eut eux ex- exc exe exh exo exs ext exu exx hbb hbc hbe hbh hbo hbs hbt hbu hbx hcb hcc hce hch hco hcs hct he- heb hec hee heh heo hes het heu hex hhb hhc hhe hhh hho hhs hht hhu hob hoc hoe hoh hoo hos hot hou hox hsb hsc hse hsh hss hst hsu hsx htb htc hte hth hto hts htt htx hub huc hue huh huo hus hut huu hux hxc ob- obb obc obe obh obo obs obt obu obx oc- ocb occ och oco ocs oct ocu ocx oeb oec oee oeh oeo oes oet oex ohc ohe ohh oho ohs oht ohu oo- oob ooc ooh ooo oos oot oox os- osb osc ose osh oso oss ost osu osx ot- otb otc ote oth oto ots ott otu ou- ouc oue ouh ouo ous out ox- oxb oxc oxo oxt oxx sbb sbc sbe sbh sbo sbs sbt sbu sbx scb scc sce sch sco scs sct scu scx se- seb sec see seh seo ses set seu sex sh- shb shc she shh sho shs sht shu sob soc soe soh soo sos sot sou sox ss- ssb ssc sse ssh sso sss sst ssu ssx stb stc ste sth sto sts stt stu stx sub suc sue suh suo sus sut suu sux sxc sxs sxt sxu t-x tbb tbc tbe tbh tbo tbs tbt tbu tcb tcc tce tch tco tcs tct tcu tcx te- teb tec tee teh teo tes tet teu tex th- thb thc the thh tho ths tht thu thx to- tob toc toe toh too tos tot tou tox tsb tsc tse tsh tso tss tst tsu tsx ttb ttc tte tth tto tts ttt ttu ttx tub tuc tue tuh tuo tus tut tuu tux txe txs txt txu ubb ubc ube ubh ubo ubs ubt ubu ubx ucb ucc uce uch uco ucs uct ucu ueb uec uee ueh ues uet uhb uhc uhe uhh uho uhs uht uhu uob uoc uoe uoo uos uot uox usb usc use ush uso uss ust usu usx utb utc ute uth uto uts utt utu utx uuc uue uus uut uuu uxb uxc uxo uxt uxu xbc xbe xbx xcb xch xcx xee xes xet xeu xex xht xoc xoo xos xot xox xsb xsc xss xst xtc xts xtx xue xus xxo xxx