-th b-u bbb bbc bbd bbe bbh bbk bbo bbt bbu bcb bcc bcd bce bch bck bco bct bcu bdb bdc bdd bde bdh bdk bdo bdt bdu be- beb bec bed bee beh bek beo bet beu bhb bhc bhd bhe bhh bhk bho bht bhu bkb bkc bke bkk bko bkt bob boc bod boe boh bok boo bot bou btb btc btd bte bth btk bto btt btu bub buc bud bue buh buk buo but buu c-- cbb cbc cbd cbe cbh cbk cbo cbt cbu ccb ccc ccd cce cch cck cco cct ccu cdb cdc cdd cde cdh cdk cdo cdt cdu ce- ceb cec ced cee ceh cek ceo cet ceu ch- chb chc chd che chh chk cho cht chu ckb ckc ckd ckh cko ckt co- cob coc cod coe coh cok coo cot cou ctb ctc ctd cte cth ctk cto ctt ctu cub cuc cud cue cuh cuk cuo cut cuu dbb dbc dbd dbe dbh dbk dbo dbt dbu dcb dcc dcd dce dck dco dct dcu ddb ddc ddd dde ddh ddk ddo ddt ddu de- deb dec ded dee deh dek deo det deu dh- dhb dhc dhd dhe dhh dhk dho dht dhu dkb dkc dke dkk dko dkt dku dob doc dod doe doh dok doo dot dou dtb dtc dtd dte dth dtk dto dtt dtu dub duc dud due duh duk duo dut ebb ebc ebd ebe ebh ebk ebo ebt ebu ec- ecb ecc ecd ece ech eck eco ect ecu ed- edb edc edd ede edh edk edo edt edu eeb eec eed eee eek eeo eet ehb ehc ehd ehe ehh eho eht ehu ekb ekc ekd eke ekh eko ekt eku eo- eob eoc eod eoe eoh eok eoo eot eou etb etc etd ete eth etk eto ett etu eu- eub euc eud eue eut hbb hbc hbd hbe hbh hbk hbo hbt hbu hcb hcc hcd hce hch hck hco hct hdb hdc hdd hde hdh hdk hdo hdt hdu he- heb hec hed hee heh hek heo het heu hhb hhc hhd hhe hhh hhk hho hht hhu hkb hkd hkh hkk hko hkt hku hob hoc hod hoe hoh hok hoo hot hou htb htc htd hte hth htk hto htt hub huc hud hue huh huk huo hut huu k-t kbb kbc kbd kbe kbh kbk kbo kbu kcb kcc kcd kce kch kck kct kcu kdb kdc kde kdh kdk kdo kdt kdu ke- keb kec ked kee keh kek keo ket khe khh khk kho khu kkb kkc kke kkh kkk kkt kku kob koc kod koe koh kok koo kot kou ktb ktc kte kth ktk kto ktt ktu kub kuc kud kue kuh kuk kut kuu ob- obb obc obd obe obh obk obo obt obu oc- ocb occ ocd och ock oco oct ocu odb odc odd ode odh odo odt odu oeb oec oed oee oeh oeo oet ohc ohd ohe ohh oho oht ohu okb okc okd oke okk oko oku oo- oob ooc ood ooh ook ooo oot ot- otb otc otd ote oth otk oto ott otu ou- ouc oud oue ouh ouk ouo out tbb tbc tbd tbe tbh tbk tbo tbt tbu tcb tcc tcd tce tch tck tco tct tcu tdb tdc tdd tde tdh tdk tdo tdt tdu te- teb tec ted tee teh tek teo tet teu th- thb thc thd the thh thk tho tht thu tkb tkc tke tkk tko tkt to- tob toc tod toe toh tok too tot tou ttb ttc ttd tte tth ttk tto ttt ttu tub tuc tud tue tuh tuk tuo tut tuu ubb ubc ube ubh ubk ubo ubt ubu ucb ucc ucd uce uch uck uco uct ucu udb udc udd ude udk udo udt udu ueb uec ued uee ueh uet uhb uhc uhd uhe uhh uho uht uhu ukb ukc uke ukk uku uob uoc uod uoe uok uoo uot utb utc utd ute uth utk uto utt utu uuc uue uut uuu