-ol b-u bbb bbc bbl bbm bbn bbo bbu bcb bcc bcl bcm bcn bco bcu blb blc bll blm bln blo blu bmb bmc bml bmm bmn bmo bmu bnb bnc bnl bnn bno bnu bob boc bol bom bon boo bou bub buc bul bum bun buo buu c-- cbb cbc cbl cbm cbn cbo cbu ccb ccc ccl ccm ccn cco ccu cl- clb clc cll clm cln clo clu cmb cmc cml cmm cmn cmo cmu cn- cnb cnc cnl cnm cnn cno cnu co- cob coc col com con coo cou cub cuc cul cum cun cuo cuu lbb lbc lbl lbm lbo lbu lcb lcc lcl lcm lcn lco lcu llb llc lll llm lln llo llu lmb lmc lml lmm lmn lmo lmu lnb lnc lnl lnm lnn lno lnu lob loc lol lom lon loo lou lub luc lul lum lun luo luu m-o mbb mbc mbl mbm mbo mbu mc- mcb mcc mcl mcm mcn mco mcu mlb mlc mll mlm mln mlo mlu mmb mmc mml mmm mmn mmo mmu mnb mnc mnl mnm mnn mno mnu mob moc mol mom mon moo mou mub muc mul mum mun muu nbb nbc nbl nbm nbn nbo nbu ncb ncc ncl ncm ncn nco ncu nlb nlc nll nlm nln nlo nlu nmb nmc nml nmm nmn nmo nmu nnb nnc nnl nnm nnn nno nnu no- nob noc nol nom non noo nou nub nuc nul num nun nuo nuu ob- obb obc obl obm obn obo obu oc- ocb occ ocl ocm ocn oco ocu olb olc oll olm oln olo olu om- omb omc oml omm omn omo omu on- onb onc onl onn ono onu oo- oob ooc ool oom oon ooo ou- ouc oul oum oun ouo ubb ubc ubl ubn ubo ubu ucb ucc ucl ucm ucn uco ucu ulb ulc ull ulm uln ulo ulu um- umb umc uml umm umn umo umu un- unb unc unl unm unn uno unu uob uoc uol uom uon uoo uuc uum uun uuu