-ol b-u bbb bbc bbg bbl bbo bbs bbu bcb bcc bcg bcl bco bcs bcu bcz bgb bgc bgg bgl bgo bgs bgu bgz blb blc blg bll blo bls blu blz bob boc bog bol boo bos bou boz bsb bsc bsg bsl bso bss bsu bub buc bug bul buo bus buu buz bzo bzs bzu bzz c-- cbb cbc cbg cbl cbo cbs cbu cbz ccb ccc ccg ccl cco ccs ccu ccz cgb cgc cgg cgl cgo cgs cgu cl- clb clc clg cll clo cls clu clz co- cob coc cog col coo cos cou coz csb csc csg csl cso css csu csz cub cuc cug cul cuo cus cuu cuz cz- czc czo gbc gbg gbl gbo gbs gbu gbz gcb gcc gcg gcl gco gcs gcu ggb ggc ggg ggo ggs ggu ggz glb glc glg gll glo gls glu glz gob goc gog gol goo gos gou goz gsb gsc gsg gsl gso gss gsu gu- gub guc gug gul guo gus guu guz gzo gzu lbb lbc lbg lbl lbo lbs lbu lcb lcc lcg lcl lco lcs lcu lgb lgc lgg lgl lgo lgs lgu llb llc llg lll llo lls llu llz lob loc log lol loo los lou loz lsb lsc lsg lsl lso lss lsu lsz lub luc lug lul luo lus luu luz lzo lzs lzu ob- obb obc obg obl obo obs obu oc- ocb occ ocg ocl oco ocs ocu ocz ogc ogg ogl ogo ogs olb olc olg oll olo ols olu oo- oob ooc oog ool ooo oos os- osb osc osg osl oso oss osu ou- ouc oul ouo ous ozo ozs ozu ozz sbb sbc sbg sbl sbo sbs sbu scb scc scg scl sco scs scu sgb sgc sgg sgl sgo sgs sgu slb slc slg sll slo sls slu sob soc sog sol soo sos sou soz ss- ssb ssc ssg ssl sso sss ssu ssz sub suc sug sul suo sus suu suz szl szu ubb ubc ubg ubl ubo ubs ubu ucb ucc ucg ucl uco ucs ucu ugb ugc ugg ugl ugo ugs ugu ulb ulc ulg ull ulo uls ulu uob uoc uog uol uoo uos usb usc usg usl uso uss usu usz uuc uug uus uuu uzb uzo uzu z-g zbb zbc zbl zbs zcl zco zcs zgb zgg zgs zo- zob zoc zog zol zoo zos zou zsg zsl zsu zsz zub zuc zug zul zus zuz zzs zzz