-ol b-u bbb bbc bbg bbl bbo bbu bcb bcc bcg bcl bco bcu bgb bgc bgg bgl bgo bgu blb blc blg bll blo blu bob boc bog bol boo bou bub buc bug bul buo buu c-- cbb cbc cbg cbl cbo cbu ccb ccc ccg ccl cco ccu cgb cgc cgg cgl cgo cgu cl- clb clc clg cll clo clu co- cob coc cog col coo cou cub cuc cug cul cuo cuu gbc gbg gbl gbo gbu gcb gcc gcg gcl gco gcu ggb ggc ggg ggo ggu glb glc glg gll glo glu gob goc gog gol goo gou gu- gub guc gug gul guo guu lbb lbc lbg lbl lbo lbu lcb lcc lcg lcl lco lcu lgb lgc lgg lgl lgo lgu llb llc llg lll llo llu lob loc log lol loo lou lub luc lug lul luo luu ob- obb obc obg obl obo obu oc- ocb occ ocg ocl oco ocu ogc ogg ogl ogo olb olc olg oll olo olu oo- oob ooc oog ool ooo ou- ouc oul ouo ubb ubc ubg ubl ubo ubu ucb ucc ucg ucl uco ucu ugb ugc ugg ugl ugo ugu ulb ulc ulg ull ulo ulu uob uoc uog uol uoo uuc uug uuu