b-u bbb bbc bbk bbt bbu bbw bcb bcc bck bct bcu bkb bkc bkk bkt bkw btb btc btk btt btu btw bub buc buk but buu buw bwb bwc bwk bwu c-- cbb cbc cbk cbt cbu cbw ccb ccc cck cct ccu ccw ckb ckc ckt ckw ctb ctc ctk ctt ctu ctw cub cuc cuk cut cuu cuw cw- cwb cwc cwk cwt cwu k-t kbb kbc kbk kbu kbw kcb kcc kck kct kcu kkb kkc kkk kkt kku ktb ktc ktk ktt ktu ktw kub kuc kuk kut kuu kw- kwc kwk kwt kww tbb tbc tbk tbt tbu tcb tcc tck tct tcu tcw tkb tkc tkk tkt tkw ttb ttc ttk ttt ttu ttw tub tuc tuk tut tuu twb twc twt twu tww ubb ubc ubk ubt ubu ubw ucb ucc uck uct ucu ucw ukb ukc ukk uku utb utc utk utt utu uuc uut uuu uwb uwc uww wbb wbc wbt wbw wcb wcc wck wct wcu wcw wkb wkc wkt wkw wtb wtc wtt wtu wtw wub wuc wut wwc wwt wwu www