-ol b-u bbb bbc bbg bbk bbl bbo bbs bbu bcb bcc bcg bck bcl bco bcs bcu bgb bgc bgg bgk bgl bgo bgs bgu bkb bkc bkg bkk bkl bko bks blb blc blg blk bll blo bls blu bob boc bog bok bol boo bos bou bsb bsc bsg bsk bsl bso bss bsu bub buc bug buk bul buo bus buu c-- cbb cbc cbg cbk cbl cbo cbs cbu ccb ccc ccg cck ccl cco ccs ccu cgb cgc cgg cgl cgo cgs cgu ckb ckc cko cks cl- clb clc clg clk cll clo cls clu co- cob coc cog cok col coo cos cou csb csc csg csk csl cso css csu cub cuc cug cuk cul cuo cus cuu gbc gbg gbk gbl gbo gbs gbu gcb gcc gcg gck gcl gco gcs gcu ggb ggc ggg ggo ggs ggu gkb gko gks glb glc glg glk gll glo gls glu gob goc gog gok gol goo gos gou gsb gsc gsg gsk gsl gso gss gsu gu- gub guc gug guk gul guo gus guu kbb kbc kbk kbl kbo kbs kbu kcb kcc kcg kck kcl kcs kcu kgb kgc kgl kgo kgs kgu kkb kkc kkk kkl kks kku kl- klb klc klg klo kls klu kob koc kog kok kol koo kos kou ksb ksc ksg ksk ksl kso kss ksu kub kuc kug kuk kul kus kuu lbb lbc lbg lbk lbl lbo lbs lbu lcb lcc lcg lck lcl lco lcs lcu lgb lgc lgg lgk lgl lgo lgs lgu lkb lkg lkl lks llb llc llg llk lll llo lls llu lob loc log lok lol loo los lou lsb lsc lsg lsk lsl lso lss lsu lub luc lug luk lul luo lus luu ob- obb obc obg obk obl obo obs obu oc- ocb occ ocg ock ocl oco ocs ocu ogc ogg ogl ogo ogs okb okc okg okk okl oko oks oku olb olc olg olk oll olo ols olu oo- oob ooc oog ook ool ooo oos os- osb osc osg osk osl oso oss osu ou- ouc ouk oul ouo ous sbb sbc sbg sbk sbl sbo sbs sbu scb scc scg sck scl sco scs scu sgb sgc sgg sgk sgl sgo sgs sgu sk- skb skc skg skk skl sko sks sku slb slc slg slk sll slo sls slu sob soc sog sok sol soo sos sou ss- ssb ssc ssg ssk ssl sso sss ssu sub suc sug suk sul suo sus suu ubb ubc ubg ubk ubl ubo ubs ubu ucb ucc ucg uck ucl uco ucs ucu ugb ugc ugg ugk ugl ugo ugs ugu ukb ukc ukk ukl uku ulb ulc ulg ulk ull ulo uls ulu uob uoc uog uok uol uoo uos usb usc usg usk usl uso uss usu uuc uug uus uuu