bbbb bbrc bbrg bcbc bcbg bccc bcru bctc bcuc brcb brkb brrr brtc bruc brug brut btcc btrc btrt bttb bubb bubu bucc buck bucu bugg bukk buku bur- burb burg burk burr burt buru but- butt cbbc cbcc cbcr cbct cbcu cbgb cbkg cbkr cbrt cbtc ccbc cccb cccc cccu ccgc ccgt ccrc ccrg ccrt cctb cctc cctt ccuc ccut cgcc cgcg cgtu ckbc ckck ckrc cktb crbc crbu crcc crcr crkc crrt crtc crub crug cruk crut ctgu ctrc cub- cubb cucc cuck cuk- curb curr curt cut- cutc cutt gc-c gcbc gccc gcrg gctc ggbt gggg grbr grcc grrr grtc grub grug grur grut gtbr gtcr gubb gubu guck gugb gugg gugu gurb gurg gurk gurr gurt guru gutt gutu kbbb kbbc kbbg kbbk kbbr kbbt kbbu kbcb kbck kbcr kbct kbcu kbgb kbgg kbgr kbgt kbkb kbkg kbkk kbkr kbrb kbrc kbrg kbrk kbrt kbru kbtb kbtc kbtk kbtr kbtt kbub kbuc kbuk kbur kbut kbuu kcbc kcbk kcbr kcbu kccb kccc kcck kccr kcct kccu kcgc kcgr kckc kckk kckr kcrc kcrg kcrr kcrt kcru kctb kctc kctu kcub kcuk kgbb kgbc kgbr kgbt kgcb kgcc kgcr kggg kggr kgrb kgrc kgrg kgrk kgrr kgrt kgtk kkbb kkbg kkbr kkbt kkcb kkck kkcr kkct kkgb kkgr kkkk kkrb kkrc kkrk kkrr kkrt kktc kktk kktu kkut kkuu krbb krbg krbk krbr krbt krcb krcc krcg krcu krgt krkc krkk krkr krku krrb krrc krrg krrk krrr krrt krtc krtk krtr kruc krug kruk krur ktbb ktbc ktbg ktbr ktbt ktbu ktcc ktck ktcr ktgg ktgr ktkb ktkc ktkk ktkr ktkt ktku ktrb ktrc ktrg ktrk ktrr ktrt ktru kttc kttg kttk kttr kttt kttu ktub ktuc ktug kubb kubc kubr kubu kucb kucc kucr kugb kugr kukk kuku kurb kurk kurr kurt kuru kutr kutt kutu kuub kuuk kuur kuuu rbbb rbbr rcbc rccb rccc rcgc rcrg rctc rctg rgtr rrrr rtcc rtcg rtkg rubb rubu ruck ruct rugg rukk ruku rurc ruru rutt rutu tbcb tbcc tbrb tccc tccu tctc tgcc tgtc tkkg trcc trtc trtr trub truc trug truk trut truu ttbb ttkg tttt tubb tubr tubu tucc tuck tugg tugu turb turc turg turk turr turt turu tutt tutu ucbc ucrc ucut ugcc ugcg uggt ugur uguu ukcc ukrc ukur urgu uruk urur urut uttu utug uuuu