-ol b-u bbb bbc bbk bbl bbo bbs bbt bbu bcb bcc bck bcl bco bcs bct bcu bkb bkc bkk bkl bko bks bkt blb blc blk bll blo bls blt blu bob boc bok bol boo bos bot bou bsb bsc bsk bsl bso bss bst bsu btb btc btk btl bto bts btt btu bub buc buk bul buo bus but buu c-- cbb cbc cbk cbl cbo cbs cbt cbu ccb ccc cck ccl cco ccs cct ccu ckb ckc cko cks ckt cl- clb clc clk cll clo cls clt clu co- cob coc cok col coo cos cot cou csb csc csk csl cso css cst csu ctb ctc ctk ctl cto cts ctt ctu cub cuc cuk cul cuo cus cut cuu k-t kbb kbc kbk kbl kbo kbs kbu kcb kcc kck kcl kcs kct kcu kkb kkc kkk kkl kks kkt kku kl- klb klc klo kls klt klu kob koc kok kol koo kos kot kou ksb ksc ksk ksl kso kss kst ksu ktb ktc ktk ktl kto kts ktt ktu kub kuc kuk kul kus kut kuu lbb lbc lbk lbl lbo lbs lbt lbu lcb lcc lck lcl lco lcs lct lcu lkb lkl lks lkt llb llc llk lll llo lls llt llu lob loc lok lol loo los lot lou lsb lsc lsk lsl lso lss lst lsu ltb ltc ltk ltl lto lts ltt ltu lub luc luk lul luo lus lut luu ob- obb obc obk obl obo obs obt obu oc- ocb occ ock ocl oco ocs oct ocu okb okc okk okl oko oks oku olb olc olk oll olo ols olt olu oo- oob ooc ook ool ooo oos oot os- osb osc osk osl oso oss ost osu ot- otb otc otk otl oto ots ott otu ou- ouc ouk oul ouo ous out sbb sbc sbk sbl sbo sbs sbt sbu scb scc sck scl sco scs sct scu sk- skb skc skk skl sko sks skt sku slb slc slk sll slo sls slt slu sob soc sok sol soo sos sot sou ss- ssb ssc ssk ssl sso sss sst ssu stb stc stk stl sto sts stt stu sub suc suk sul suo sus sut suu tbb tbc tbk tbl tbo tbs tbt tbu tcb tcc tck tcl tco tcs tct tcu tkb tkc tkk tkl tko tks tkt tlc tlk tll tlo tls tlt tlu to- tob toc tok tol too tos tot tou tsb tsc tsk tsl tso tss tst tsu ttb ttc ttk ttl tto tts ttt ttu tub tuc tuk tul tuo tus tut tuu ubb ubc ubk ubl ubo ubs ubt ubu ucb ucc uck ucl uco ucs uct ucu ukb ukc ukk ukl uku ulb ulc ulk ull ulo uls ult ulu uob uoc uok uol uoo uos uot usb usc usk usl uso uss ust usu utb utc utk utl uto uts utt utu uuc uus uut uuu

-ous bbbb bbbs bblb bbls bcbc bcbs bccc bccl bccs bcos bcsc bcsl bcss bctc bcts bcuc blbt blcu blkb blls blob bloc blok bloo blot blou blss blst blts blub blus blut bobb bobo bobs bobu bock boco bocs bocu boko boks boku bolk boll bolo bols bolt bolu boob booc book bool boos boot bosc bosk boso boss bost bosu botb boto bots bott bouk boul bous bout bscs bskt bslc bsos bssc bsts btcc btcl btcs btob btss bttb btus bubb bubo bubs bubu bucc buck buco bucs bucu bukk buko buku bulb bulk bull buls bult bulu buol busc busk buss bust busu but- buto buts butt buus c-bo cbbc cbbs cbcc cbcl cbcs cbct cbcu cbkl cbko cblb cblc cbol cbot cbsc cbtc cbtl cbus ccbc cccb cccc cccl cccs cccu cclc ccls ccob ccoc ccsl ccss ccst cctb cctc cctl cctt ccuc ccus ccut ckbc ckck ckcl ckco ckcs ckob ckoc ckoo ckos ckot cksb cksl ckso ckst cktb ckts clob clok cloo clos clot clou clsc cltb cltc clts club clut cobb cobo cobs cobu cock coco coct cocu cok- coko col- colb colk coll colo cols colt colu coob cook cool coos coot cosc cosl coso coss cost cotb cotc coto cots cott cotu coub couk coul cous cout cscb cscc cscl csco cscs csks cslu csob csos csot cstc csto csts csus ctbs ctls ctol ctos ctot ctsc ctss ctsu ctts cub- cubb cubs cucc cuck cuk- culb culc culk cull culo culs cult cusb cusk cuso cuss cust cusu cut- cutc cuto cuts cutt k-lo k-os kbbb kbbc kbbk kbbl kbbo kbbs kbbt kbbu kbcb kbck kbcl kbco kbcs kbct kbcu kbkb kbkk kbkl kbko kblb kbll kblo kbls kblt kblu kbob kboc kbok kboo kbos kbot kbsb kbsk kbso kbss kbst kbsu kbtb kbtc kbtk kbtl kbto kbts kbtt kbub kbuc kbuk kbul kbus kbut kbuu kcbc kcbk kcbl kcbs kcbu kccb kccc kcck kccl kcct kccu kckc kckk kckl kcko kclc kclk kcll kcls kclt kclu kcob kcol kcos kcot kcou kcsb kcsc kcss kcst kcsu kctb kctc kcto kctu kcub kcuk kcul kkbb kkbl kkbo kkbs kkbt kkcb kkck kkcl kkco kkcs kkct kkkk kklb kklc kkll kklo kkls kkob kkol kkoo kkot kkss kkst kksu kktc kktk kktl kkts kktu kkus kkut kkuu klbb klbc klbl klbs klbt klbu klcb klcc klck klcl klcs klkc klkk klkl klko klks kllb kllc kllk klls klob kloc klok klol kloo klos klou klsc klst klsu kltc kltk klto kltt klub kluk kluu kobb kobc kobk kobo kobs kobu kocb kock kocs koct kokb kokc kokk koko koks koku kolb kolc kolk koll kolo kols kolt kolu koob kooc kook kool kooo koos koot koou kos- kosb kosc koso koss kost kosu kotb kotc kotk koto kots kott kotu koub koul kous kout kouu ksbc ksbl ksbs kscb ksck kscl ksco kscs kscu kskb kskk ksko ksks ksku kslb kslc kslk ksll kslo kslt kslu ksob ksoc ksok ksol