b-u bbb bbc bbk bbn bbo bbt bbu bbw bcb bcc bck bcn bco bct bcu bkb bkc bkk bkn bko bkt bkw bnb bnc bnk bnn bno bnt bnu bnw bob boc bok bon boo bot bou bow btb btc btk btn bto btt btu btw bub buc buk bun buo but buu buw bwb bwc bwk bwo bwu c-- cbb cbc cbk cbn cbo cbt cbu cbw ccb ccc cck ccn cco cct ccu ccw ckb ckc cko ckt ckw cn- cnb cnc cnn cno cnt cnu cnw co- cob coc cok con coo cot cou cow ctb ctc ctk ctn cto ctt ctu ctw cub cuc cuk cun cuo cut cuu cuw cw- cwb cwc cwk cwn cwo cwt cwu k-t kbb kbc kbk kbn kbo kbu kbw kcb kcc kck kcn kct kcu kkb kkc kkk kkn kkt kku kn- knc knk knn kno knt knu kob koc kok kon koo kot kou kow ktb ktc ktk ktn kto ktt ktu ktw kub kuc kuk kun kut kuu kw- kwc kwk kwo kwt kww nbb nbc nbk nbn nbo nbt nbu nbw ncb ncc nck ncn nco nct ncu ncw nkc nkk nkn nko nkt nku nnb nnc nnk nnn nno nnt nnu nnw no- nob noc nok non noo not nou now ntb ntc ntk ntn nto ntt ntu nub nuc nuk nun nuo nut nuu nwb nwc nwn nwo nwt nwu ob- obb obc obk obn obo obt obu obw oc- ocb occ ock ocn oco oct ocu ocw okb okc okk oko oku okw on- onb onc onk onn ono ont onu oo- oob ooc ook oon ooo oot oow ot- otb otc otk otn oto ott otu otw ou- ouc ouk oun ouo out owb owc owk own owo owt owu oww tbb tbc tbk tbn tbo tbt tbu tcb tcc tck tcn tco tct tcu tcw tkb tkc tkk tko tkt tkw tnb tnc tnk tnn tno tnt tnw to- tob toc tok ton too tot tou tow ttb ttc ttk ttn tto ttt ttu ttw tub tuc tuk tun tuo tut tuu twb twc twn two twt twu tww ubb ubc ubk ubn ubo ubt ubu ubw ucb ucc uck ucn uco uct ucu ucw ukb ukc ukk ukn uku un- unb unc unk unn uno unt unu unw uob uoc uok uon uoo uot uow utb utc utk utn uto utt utu uuc uun uut uuu uwb uwc uwn uww wbb wbc wbn wbo wbt wbw wcb wcc wck wcn wco wct wcu wcw wkb wkc wko wkt wkw wn- wnc wnn wno wnt wnu wnw wob woc wok won woo wot wou wow wtb wtc wtn wto wtt wtu wtw wub wuc wun wuo wut wwc wwn wwo wwt wwu www