-ol b-u bbb bbc bbl bbm bbo bbu bbx bcb bcc bcl bcm bco bcu bcx blb blc bll blm blo blu blx bmb bmc bml bmm bmo bmu bmx bob boc bol bom boo bou box bub buc bul bum buo buu bux bxb bxl bxm bxo bxx c-- cbb cbc cbl cbm cbo cbu cbx ccb ccc ccl ccm cco ccu ccx cl- clb clc cll clm clo clu clx cmb cmc cml cmm cmo cmu cmx co- cob coc col com coo cou cox cub cuc cul cum cuo cuu cxc cxl cxo cxx lbb lbc lbl lbm lbo lbu lbx lcb lcc lcl lcm lco lcu lcx llb llc lll llm llo llu lmb lmc lml lmm lmo lmu lob loc lol lom loo lou lox lub luc lul lum luo luu lux lxc lxo lxx m-o mbb mbc mbl mbm mbo mbu mbx mc- mcb mcc mcl mcm mco mcu mcx mlb mlc mll mlm mlo mlu mlx mmb mmc mml mmm mmo mmu mmx mob moc mol mom moo mou mox mub muc mul mum muu mux mxc mxl mxu ob- obb obc obl obm obo obu obx oc- ocb occ ocl ocm oco ocu ocx olb olc oll olm olo olu om- omb omc oml omm omo omu omx oo- oob ooc ool oom ooo oox ou- ouc oul oum ouo ox- oxb oxc oxo oxx ubb ubc ubl ubo ubu ubx ucb ucc ucl ucm uco ucu ulb ulc ull ulm ulo ulu um- umb umc uml umm umo umu uob uoc uol uom uoo uox uuc uum uuu uxb uxc uxo uxu xbc xbl xbx xcb xcl xcx xlb xlm xmc xml xmm xmo xmu xmx xoc xom xoo xox xul xxl xxo xxx