-ol b-u bbb bbl bbm bbn bbo bbs bbt bbu blb bll blm bln blo bls blt blu bmb bml bmm bmn bmo bms bmt bmu bnb bnl bnn bno bns bnt bnu bob bol bom bon boo bos bot bou bsb bsl bsm bsn bso bss bst bsu btb btl btm btn bto bts btt btu bub bul bum bun buo bus but buu lbb lbl lbm lbo lbs lbt lbu llb lll llm lln llo lls llt llu lmb lml lmm lmn lmo lms lmt lmu lnb lnl lnm lnn lno lns lnt lnu lob lol lom lon loo los lot lou lsb lsl lsm lsn lso lss lst lsu ltb ltl ltm lto lts ltt ltu lub lul lum lun luo lus lut luu m-o mbb mbl mbm mbo mbs mbt mbu mlb mll mlm mln mlo mls mlt mlu mmb mml mmm mmn mmo mms mmt mmu mnb mnl mnm mnn mno mns mnt mnu mob mol mom mon moo mos mot mou msb msl msm msn mso mss mst msu mtb mtl mtm mtn mto mts mtt mtu mub mul mum mun mus mut muu nbb nbl nbm nbn nbo nbs nbt nbu nlb nll nlm nln nlo nls nlt nlu nmb nml nmm nmn nmo nms nmt nmu nnb nnl nnm nnn nno nns nnt nnu no- nob nol nom non noo nos not nou nsb nsl nsm nsn nso nss nst nsu ntb ntm ntn nto nts ntt ntu nub nul num nun nuo nus nut nuu ob- obb obl obm obn obo obs obt obu olb oll olm oln olo ols olt olu om- omb oml omm omn omo oms omt omu on- onb onl onn ono ons ont onu oo- oob ool oom oon ooo oos oot os- osb osl osm osn oso oss ost osu ot- otb otl otm otn oto ots ott otu ou- oul oum oun ouo ous out sbb sbl sbm sbn sbo sbs sbt sbu slb sll slm sln slo sls slt slu smb sml smm smn smo sms smt smu snb snl snm snn sno sns snt snu sob sol som son soo sos sot sou ss- ssb ssl ssm ssn sso sss sst ssu stb stl stm stn sto sts stt stu sub sul sum sun suo sus sut suu tbb tbl tbm tbn tbo tbs tbt tbu tll tlm tln tlo tls tlt tlu tmb tml tmm tmn tmo tms tmt tmu tnb tnl tnm tnn tno tns tnt to- tob tol tom ton too tos tot tou tsb tsl tsm tsn tso tss tst tsu ttb ttl ttm ttn tto tts ttt ttu tub tul tum tun tuo tus tut tuu ubb ubl ubn ubo ubs ubt ubu ulb ull ulm uln ulo uls ult ulu um- umb uml umm umn umo ums umt umu un- unb unl unm unn uno uns unt unu uob uol uom uon uoo uos uot usb usl usm usn uso uss ust usu utb utl utm utn uto uts utt utu uum uun uus uut uuu