-th b-u bbb bbc bbh bbk bbn bbo bbr bbt bbu bcb bcc bch bck bcn bco bcr bct bcu bhb bhc bhh bhk bho bhr bht bhu bkb bkc bkk bkn bko bkr bkt bnb bnc bnk bnn bno bnr bnt bnu bob boc boh bok bon boo bor bot bou brb brh brk brn bro brr brt bru btb btc bth btk btn bto btr btt btu bub buc buh buk bun buo bur but buu c-- cbb cbc cbh cbk cbn cbo cbr cbt cbu ccb ccc cch cck ccn cco ccr cct ccu ch- chb chc chh chk chn cho chr cht chu ckb ckc ckh cko ckt cn- cnb cnc cnh cnn cno cnr cnt cnu co- cob coc coh cok con coo cor cot cou crb crc crh crk crn cro crr crt cru ctb ctc cth ctk ctn cto ctr ctt ctu cub cuc cuh cuk cun cuo cur cut cuu hbb hbc hbh hbk hbn hbo hbr hbt hbu hcb hcc hch hck hcn hco hcr hct hhb hhc hhh hhk hhn hho hhr hht hhu hkb hkh hkk hkn hko hkr hkt hku hnb hnc hnh hnk hnn hno hnt hnu hob hoc hoh hok hon hoo hor hot hou hr- hrb hrc hrh hrk hrn hro hrr hrt hru htb htc hth htk htn hto htr htt hub huc huh huk hun huo hur hut huu k-t kbb kbc kbh kbk kbn kbo kbr kbu kcb kcc kch kck kcn kcr kct kcu khh khk khn kho khr khu kkb kkc kkh kkk kkn kkr kkt kku kn- knc knk knn kno knr knt knu kob koc koh kok kon koo kor kot kou krc krk krn kro krr krt kru ktb ktc kth ktk ktn kto ktr ktt ktu kub kuc kuh kuk kun kur kut kuu nbb nbc nbk nbn nbo nbr nbt nbu ncb ncc nch nck ncn nco ncr nct ncu nhb nhc nhh nhk nhn nhr nht nhu nkc nkk nkn nko nkr nkt nku nnb nnc nnh nnk nnn nno nnt nnu no- nob noc noh nok non noo nor not nou nrb nrc nrk nrn nro nrr nrt nru ntb ntc nth ntk ntn nto ntr ntt ntu nub nuc nuh nuk nun nuo nur nut nuu ob- obb obc obh obk obn obo obr obt obu oc- ocb occ och ock ocn oco ocr oct ocu ohc ohh ohn oho ohr oht ohu okb okc okk oko okr oku on- onb onc onh onk onn ono onr ont onu oo- oob ooc ooh ook oon ooo oor oot or- orb orc orh ork orn oro orr ort oru ot- otb otc oth otk otn oto otr ott otu ou- ouc ouh ouk oun ouo our out rbb rbc rbh rbk rbn rbo rbr rbt rbu rcb rcc rch rcn rco rcr rct rcu rh- rhb rhc rhh rhn rho rhr rht rhu rkb rkc rkk rko rkt rku rnb rnc rnh rnn rno rnr rnt rnu rob roc roh rok ron roo ror rot rou rrb rrc rrh rrk rrn rrr rrt rru rtb rtc rtk rtn rto rtr rtt rtu rub ruc ruh ruk run ruo rur rut ruu tbb tbc tbh tbk tbn tbo tbr tbt tbu tcb tcc tch tck tcn tco tcr tct tcu th- thb thc thh thk thn tho thr tht thu tkb tkc tkk tko tkr tkt tnb tnc tnh tnk tnn tno tnr tnt to- tob toc toh tok ton too tor tot tou trb trc trh trk trn tro trr trt tru ttb ttc tth ttk ttn tto ttr ttt ttu tub tuc tuh tuk tun tuo tur tut tuu ubb ubc ubh ubk ubn ubo ubr ubt ubu ucb ucc uch uck ucn uco ucr uct ucu uhb uhc uhh uho uhr uht uhu ukb ukc ukk ukn ukr uku un- unb unc unh unk unn uno unr unt unu uob uoc uok uon uoo uor uot ur- urb urc urk urn uro urr urt uru utb utc uth utk utn uto utr utt utu uuc uun uur uut uuu