-ol -th b-u bbb bbc bbh bbk bbl bbo bbt bbu bcb bcc bch bck bcl bco bct bcu bhb bhc bhh bhk bhl bho bht bhu bkb bkc bkk bkl bko bkt blb blc blh blk bll blo blt blu bob boc boh bok bol boo bot bou btb btc bth btk btl bto btt btu bub buc buh buk bul buo but buu c-- cbb cbc cbh cbk cbl cbo cbt cbu ccb ccc cch cck ccl cco cct ccu ch- chb chc chh chk chl cho cht chu ckb ckc ckh cko ckt cl- clb clc clh clk cll clo clt clu co- cob coc coh cok col coo cot cou ctb ctc cth ctk ctl cto ctt ctu cub cuc cuh cuk cul cuo cut cuu hbb hbc hbh hbk hbl hbo hbt hbu hcb hcc hch hck hcl hco hct hhb hhc hhh hhk hhl hho hht hhu hkb hkh hkk hkl hko hkt hku hlb hlc hlh hll hlo hlt hlu hob hoc hoh hok hol hoo hot hou htb htc hth htk htl hto htt hub huc huh huk hul huo hut huu k-t kbb kbc kbh kbk kbl kbo kbu kcb kcc kch kck kcl kct kcu khh khk kho khu kkb kkc kkh kkk kkl kkt kku kl- klb klc klh klo klt klu kob koc koh kok kol koo kot kou ktb ktc kth ktk ktl kto ktt ktu kub kuc kuh kuk kul kut kuu lbb lbc lbh lbk lbl lbo lbt lbu lcb lcc lch lck lcl lco lct lcu lhb lhc lhh lhk lho lht lhu lkb lkh lkl lkt llb llc llk lll llo llt llu lob loc loh lok lol loo lot lou ltb ltc lth ltk ltl lto ltt ltu lub luc luh luk lul luo lut luu ob- obb obc obh obk obl obo obt obu oc- ocb occ och ock ocl oco oct ocu ohc ohh ohl oho oht ohu okb okc okk okl oko oku olb olc olk oll olo olt olu oo- oob ooc ooh ook ool ooo oot ot- otb otc oth otk otl oto ott otu ou- ouc ouh ouk oul ouo out tbb tbc tbh tbk tbl tbo tbt tbu tcb tcc tch tck tcl tco tct tcu th- thb thc thh thk thl tho tht thu tkb tkc tkk tkl tko tkt tlc tlh tlk tll tlo tlt tlu to- tob toc toh tok tol too tot tou ttb ttc tth ttk ttl tto ttt ttu tub tuc tuh tuk tul tuo tut tuu ubb ubc ubh ubk ubl ubo ubt ubu ucb ucc uch uck ucl uco uct ucu uhb uhc uhh uhl uho uht uhu ukb ukc ukk ukl uku ulb ulc ulk ull ulo ult ulu uob uoc uok uol uoo uot utb utc uth utk utl uto utt utu uuc uut uuu