-ol b-u bbb bbi bbl bbm bbo bbs bbt bbu bi- bib bii bil bim bio bis bit biu blb bli bll blm blo bls blt blu bmb bmi bml bmm bmo bms bmt bmu bob boi bol bom boo bos bot bou bsb bsi bsl bsm bso bss bst bsu btb bti btl btm bto bts btt btu bub bui bul bum buo bus but buu ibb ibi ibl ibm ibo ibs ibt ibu iib iii iil iim iio iis iit iiu il- ilb ili ill ilm ilo ils ilt ilu im- imb imi iml imm imo ims imt imu io- iob ioi iol iom ioo ios iot iou is- isb isi isl ism iso iss ist isu itb iti itl itm ito its itt itu iu- iub iui ium ius iut lbb lbi lbl lbm lbo lbs lbt lbu lib lii lil lim lio lis lit liu llb lli lll llm llo lls llt llu lmb lmi lml lmm lmo lms lmt lmu lob loi lol lom loo los lot lou lsb lsi lsl lsm lso lss lst lsu ltb lti ltl ltm lto lts ltt ltu lub lui lul lum luo lus lut luu m-o mbb mbi mbl mbm mbo mbs mbt mbu mi- mib mii mil mim mio mis mit miu mlb mli mll mlm mlo mls mlt mlu mmb mmi mml mmm mmo mms mmt mmu mob moi mol mom moo mos mot mou msb msi msl msm mso mss mst msu mtb mti mtl mtm mto mts mtt mtu mub mui mul mum mus mut muu o-i ob- obb obi obl obm obo obs obt obu oib oii oil oim oio ois oit oiu olb oli oll olm olo ols olt olu om- omb omi oml omm omo oms omt omu oo- oob ooi ool oom ooo oos oot os- osb osi osl osm oso oss ost osu ot- otb oti otl otm oto ots ott otu ou- oui oul oum ouo ous out sbb sbi sbl sbm sbo sbs sbt sbu sib sii sil sim sio sis sit siu slb sli sll slm slo sls slt slu smb smi sml smm smo sms smt smu sob soi sol som soo sos sot sou ss- ssb ssi ssl ssm sso sss sst ssu stb sti stl stm sto sts stt stu sub sui sul sum suo sus sut suu tbb tbi tbl tbm tbo tbs tbt tbu tib tii til tim tio tis tit tiu tli tll tlm tlo tls tlt tlu tmb tmi tml tmm tmo tms tmt tmu to- tob toi tol tom too tos tot tou tsb tsi tsl tsm tso tss tst tsu ttb tti ttl ttm tto tts ttt ttu tub tui tul tum tuo tus tut tuu ubb ubi ubl ubo ubs ubt ubu uib uii uil uim uio uis uit uiu ulb uli ull ulm ulo uls ult ulu um- umb umi uml umm umo ums umt umu uob uol uom uoo uos uot usb usi usl usm uso uss ust usu utb uti utl utm uto uts utt utu uum uus uut uuu