-th b-u bbb bbc bbd bbe bbh bbt bbu bcb bcc bcd bce bch bct bcu bdb bdc bdd bde bdh bdt bdu be- beb bec bed bee beh bet beu bhb bhc bhd bhe bhh bht bhu btb btc btd bte bth btt btu bub buc bud bue buh but buu c-- cbb cbc cbd cbe cbh cbt cbu ccb ccc ccd cce cch cct ccu cdb cdc cdd cde cdh cdt cdu ce- ceb cec ced cee ceh cet ceu ch- chb chc chd che chh cht chu ctb ctc ctd cte cth ctt ctu cub cuc cud cue cuh cut cuu dbb dbc dbd dbe dbh dbt dbu dcb dcc dcd dce dct dcu ddb ddc ddd dde ddh ddt ddu de- deb dec ded dee deh det deu dh- dhb dhc dhd dhe dhh dht dhu dtb dtc dtd dte dth dtt dtu dub duc dud due duh dut ebb ebc ebd ebe ebh ebt ebu ec- ecb ecc ecd ece ech ect ecu ed- edb edc edd ede edh edt edu eeb eec eed eee eet ehb ehc ehd ehe ehh eht ehu etb etc etd ete eth ett etu eu- eub euc eud eue eut hbb hbc hbd hbe hbh hbt hbu hcb hcc hcd hce hch hct hdb hdc hdd hde hdh hdt hdu he- heb hec hed hee heh het heu hhb hhc hhd hhe hhh hht hhu htb htc htd hte hth htt hub huc hud hue huh hut huu tbb tbc tbd tbe tbh tbt tbu tcb tcc tcd tce tch tct tcu tdb tdc tdd tde tdh tdt tdu te- teb tec ted tee teh tet teu th- thb thc thd the thh tht thu ttb ttc ttd tte tth ttt ttu tub tuc tud tue tuh tut tuu ubb ubc ube ubh ubt ubu ucb ucc ucd uce uch uct ucu udb udc udd ude udt udu ueb uec ued uee ueh uet uhb uhc uhd uhe uhh uht uhu utb utc utd ute uth utt utu uuc uue uut uuu