bbb bbe bbi bbk bbl bbt be- beb bee bei bek bel bet bi- bib bie bii bik bil bit bkb bke bkk bkl bkt blb ble bli blk bll blt btb bte bti btk btl btt ebb ebe ebi ebk ebl ebt eeb eee eek eel eet eib eie eii eik eil eit ekb eke eki ekl ekt elb ele eli elk ell elt etb ete eti etk etl ett ibb ibe ibi ibk ibl ibt ie- iee iei iek iel iet iib iie iii iil iit ikb ike iki ikk ikl ikt il- ilb ile ili ilk ill ilt itb ite iti itk itl itt k-t kbb kbe kbi kbk kbl ke- keb kee kei kek kel ket kib kie kii kik kil kit kkb kke kki kkk kkl kkt kl- klb kli klt ktb kte ktk ktl ktt lbb lbe lbi lbk lbl lbt leb lee lei lek lel let lib lie lii lik lil lit lkb lkl lkt llb lle lli llk lll llt ltb lte lti ltk ltl ltt tbb tbe tbi tbk tbl tbt te- teb tee tei tek tel tet tib tie tii tik til tit tkb tke tkk tkl tkt tle tli tlk tll tlt ttb tte tti ttk ttl ttt