-ol b-u bbb bbc bbg bbl bbo bbs bbt bbu bcb bcc bcg bcl bco bcs bct bcu bgb bgc bgg bgl bgo bgs bgt bgu blb blc blg bll blo bls blt blu bob boc bog bol boo bos bot bou bsb bsc bsg bsl bso bss bst bsu btb btc btg btl bto bts btt btu bub buc bug bul buo bus but buu c-- cbb cbc cbg cbl cbo cbs cbt cbu ccb ccc ccg ccl cco ccs cct ccu cgb cgc cgg cgl cgo cgs cgt cgu cl- clb clc clg cll clo cls clt clu co- cob coc cog col coo cos cot cou csb csc csg csl cso css cst csu ctb ctc ctg ctl cto cts ctt ctu cub cuc cug cul cuo cus cut cuu gbc gbg gbl gbo gbs gbt gbu gcb gcc gcg gcl gco gcs gct gcu ggb ggc ggg ggo ggs ggt ggu glb glc glg gll glo gls glt glu gob goc gog gol goo gos got gou gsb gsc gsg gsl gso gss gst gsu gtb gtc gtg gtl gto gts gtt gtu gu- gub guc gug gul guo gus gut guu lbb lbc lbg lbl lbo lbs lbt lbu lcb lcc lcg lcl lco lcs lct lcu lgb lgc lgg lgl lgo lgs lgt lgu llb llc llg lll llo lls llt llu lob loc log lol loo los lot lou lsb lsc lsg lsl lso lss lst lsu ltb ltc ltg ltl lto lts ltt ltu lub luc lug lul luo lus lut luu ob- obb obc obg obl obo obs obt obu oc- ocb occ ocg ocl oco ocs oct ocu ogc ogg ogl ogo ogs ogt olb olc olg oll olo ols olt olu oo- oob ooc oog ool ooo oos oot os- osb osc osg osl oso oss ost osu ot- otb otc otg otl oto ots ott otu ou- ouc oul ouo ous out sbb sbc sbg sbl sbo sbs sbt sbu scb scc scg scl sco scs sct scu sgb sgc sgg sgl sgo sgs sgt sgu slb slc slg sll slo sls slt slu sob soc sog sol soo sos sot sou ss- ssb ssc ssg ssl sso sss sst ssu stb stc stg stl sto sts stt stu sub suc sug sul suo sus sut suu tbb tbc tbg tbl tbo tbs tbt tbu tcb tcc tcg tcl tco tcs tct tcu tgb tgc tgg tgl tgo tgs tgt tgu tlc tlg tll tlo tls tlt tlu to- tob toc tog tol too tos tot tou tsb tsc tsg tsl tso tss tst tsu ttb ttc ttg ttl tto tts ttt ttu tub tuc tug tul tuo tus tut tuu ubb ubc ubg ubl ubo ubs ubt ubu ucb ucc ucg ucl uco ucs uct ucu ugb ugc ugg ugl ugo ugs ugt ugu ulb ulc ulg ull ulo uls ult ulu uob uoc uog uol uoo uos uot usb usc usg usl uso uss ust usu utb utc utl uto uts utt utu uuc uug uus uut uuu