bbbb bbbq bbbs bbqs bbrc bcbc bcbs bccc bccs bcrs bcru bcsc bcss bcuc brcb brkb brrr brrs brsb brsr bruc brus bruz bscs bssc bubb bubq bubs bubu bucc buck bucs bucu bucz bukk buku bur- burb burk burr burs buru burz busc busk buss busu buus buuz buzz bzrk bzzz cbbc cbbs cbcc cbcr cbcs cbcu cbkr cbsc cbus ccbc cccb cccc cccs cccu ccrc ccrs ccss ccuc ccus ckbc ckck ckcs ckrc cksb crbc crbu crcc crcr crcz crkc crss crub cruk crus cruz cscb cscc cscr cscs csks csrc csrs cssr csur csus cub- cubb cubs cucc cuck cucq cuk- curb curr curs cusb cusk cuss cusu kbbb kbbc kbbk kbbr kbbs kbbu kbbz kbcb kbck kbcq kbcr kbcs kbcu kbcz kbkb kbkk kbkr kbkz kbqb kbqr kbrb kbrc kbrk kbrq kbru kbrz kbsb kbsk kbsq kbsr kbss kbsu kbsz kbub kbuc kbuk kbur kbus kbuu kbuz kbzc kbzq kbzs kbzu kbzz kcbc kcbk kcbq kcbr kcbs kcbu kccb kccc kcck kccr kccu kckc kckk kckr kckz kcqq kcrc kcrr kcrs kcru kcrz kcsb kcsc kcsr kcss kcsu kcub kcuk kcuz kczq kczz kkbb kkbq kkbr kkbs kkbz kkcb kkck kkcq kkcr kkcs kkkk kkqq kkrb kkrc kkrk kkrq kkrr kkrs kkrz kksr kkss kksu kkus kkuu kkzq kkzu kkzz kqbb kqbk kqbr kqbu kqbz kqck kqcr kqcs kqkk kqks kqqk kqqq kqqs kqqz kqrk kqrq kqrr kqrs kqsc kqsk kqsr kqss kqur kqzr kqzz krbb krbk krbq krbr krbz krcb krcc krcq krcs krcu krkc krkk krkq krkr krks krku krkz krqb krqk krqq krqr krqu krqz krrb krrc krrk krrq krrr krrs krrz krsc krsk krsq krsr krss krsu kruc kruk krur kruz krzk krzq krzr krzs krzz ksbc ksbq ksbr ksbs ksbz kscb ksck kscq kscr kscs kscu kskb kskk kskq kskr ksks ksku kskz ksqb ksqq ksqs ksrb ksrq ksrr ksrs ksrz kssq kssr ksss kssu kssz ksub ksuu kszr kubb kubc kubq kubr kubs kubu kucb kucc kucr kukk kuks kuku kuqq kurb kurk kurq kurr kurs kuru kurz kusb kusc kusq kusu kuub kuuk kuur kuuu kuuz kuzu kuzz kzbb kzbk kzbq kzbr kzbs kzbz kzcr kzkr kzks kzkz kzqq kzqz kzrb kzrc kzrk kzrr kzrs kzrz kzsb kzsc kzsu kzus kzuu kzuz kzzb kzzk kzzq kzzr kzzs kzzz qqqq qrss qsqs qsrs qucu quu- rbbb rbbr rbbs rbss rcbc rccb rccc rccs rcsc rcss rkss rrrr rscc rscs rubb rubs rubu ruck rukk ruku rurc rurs ruru rusk russ rusu sbbs sbcc sbcs sbrk sbus sccc sccs sck- scr- scrc scrs scsc scsr scsu scub scur skss skur srbc srcc srub srzu ssbr sscc sscs ssrc ssrs sssb sssc ssss sub- subb subs subz suc- succ suck sucr sucs suks suku suqs sur- surc surr surs suru sus- susk suss susu susz suus suzu suzz szss szuc szur ucbc ucrc ucsb ucsc ucsu ukcc ukrc uksc ukur uqcc urbs urss ursu uruk uruq urur urus uruz us-k usbc usbr usbs uscc uscs ussb ussc ussr usss ussu usus uuuu zbus zsss zubr zubu zuck zukr zurb zurr zuru zuuk zuzu zzzs zzzz