-ol bbb bbe bbi bbk bbl bbm bbo bbt be- beb bee bei bek bel bem beo bet bi- bib bie bii bik bil bim bio bit bkb bke bkk bkl bkm bko bkt blb ble bli blk bll blm blo blt bmb bme bmi bmk bml bmm bmo bmt bob boe boi bok bol bom boo bot btb bte bti btk btl btm bto btt ebb ebe ebi ebk ebl ebm ebo ebt eeb eee eek eel eem eeo eet eib eie eii eik eil eim eio eit ekb eke eki ekl eko ekt elb ele eli elk ell elm elo elt em- emb eme emi emk eml emm emo emt eo- eob eoe eoi eok eol eom eoo eot etb ete eti etk etl etm eto ett ibb ibe ibi ibk ibl ibm ibo ibt ie- iee iei iek iel iem iet iib iie iii iil iim iio iit ikb ike iki ikk ikl iko ikt il- ilb ile ili ilk ill ilm ilo ilt im- imb ime imi iml imm imo imt io- iob ioe ioi iol iom ioo iot itb ite iti itk itl itm ito itt k-t kbb kbe kbi kbk kbl kbm kbo ke- keb kee kei kek kel kem keo ket kib kie kii kik kil kim kio kit kkb kke kki kkk kkl kkm kkt kl- klb kli klm klo klt kmb kme kmi kmk kml kmm kmo kmt kob koe koi kok kol kom koo kot ktb kte ktk ktl ktm kto ktt lbb lbe lbi lbk lbl lbm lbo lbt leb lee lei lek lel lem leo let lib lie lii lik lil lim lio lit lkb lkl lkt llb lle lli llk lll llm llo llt lmb lme lmi lmk lml lmm lmo lmt lob loe loi lok lol lom loo lot ltb lte lti ltk ltl ltm lto ltt m-o mbb mbe mbi mbk mbl mbm mbo mbt meb mee mei mek mel mem meo met mi- mib mie mii mik mil mim mio mit mkb mke mkk mkl mkm mko mkt mlb mle mli mlk mll mlm mlo mlt mmb mme mmi mmk mml mmm mmo mmt mob moe moi mok mol mom moo mot mtb mte mti mtk mtl mtm mto mtt o-i ob- obb obe obi obk obl obm obo obt oeb oee oei oel oem oeo oet oib oie oii oik oil oim oio oit okb oke oki okk okl oko olb ole oli olk oll olm olo olt om- omb ome omi oml omm omo omt oo- oob ooi ook ool oom ooo oot ot- otb ote oti otk otl otm oto ott tbb tbe tbi tbk tbl tbm tbo tbt te- teb tee tei tek tel tem teo tet tib tie tii tik til tim tio tit tkb tke tkk tkl tkm tko tkt tle tli tlk tll tlm tlo tlt tmb tme tmi tmk tml tmm tmo tmt to- tob toe toi tok tol tom too tot ttb tte tti ttk ttl ttm tto ttt