-er bbb bbe bbi bbk bbl bbn bbr bbt be- beb bee bei bek bel ben ber bet bi- bib bie bii bik bil bin bir bit bkb bke bkk bkl bkn bkr bkt blb ble bli blk bll bln blr blt bnb bne bni bnk bnl bnn bnr bnt brb bre bri brk brl brn brr brt btb bte bti btk btl btn btr btt ebb ebe ebi ebk ebl ebn ebr ebt eeb eee eek eel een eer eet eib eie eii eik eil ein eir eit ekb eke eki ekl ekr ekt elb ele eli elk ell eln elr elt en- enb ene eni enk enl enn enr ent erb ere eri erk erl ern err ert etb ete eti etk etl etn etr ett ibb ibe ibi ibk ibl ibn ibr ibt ie- iee iei iek iel ien ier iet iib iie iii iil iin iir iit ikb ike iki ikk ikl ikr ikt il- ilb ile ili ilk ill iln ilr ilt in- inb ine ini ink inl inn inr int ir- irb ire iri irk irl irn irr irt itb ite iti itk itl itn itt k-t kbb kbe kbi kbk kbl kbn kbr ke- keb kee kei kek kel ken ker ket kib kie kii kik kil kin kir kit kkb kke kki kkk kkl kkn kkr kkt kl- klb kli klr klt kn- kne kni knk knl knn knr knt kri krk krl krn krr krt ktb kte ktk ktl ktn ktr ktt lbb lbe lbi lbk lbl lbr lbt leb lee lei lek lel len ler let lib lie lii lik lil lin lir lit lkb lkl lkr lkt llb lle lli llk lll lln llr llt lnb lne lni lnk lnl lnn lnr lnt lrb lri lrk lrn lrr lrt ltb lte lti ltk ltl ltr ltt n-i nbb nbe nbi nbk nbl nbn nbr nbt ne- neb nee nei nek nel nen ner net nib nie nii nik nil nin nir nit nke nki nkk nkn nkr nkt nlb nle nli nlk nll nln nlr nlt nnb nne nni nnk nnl nnn nnt nrb nre nri nrk nrl nrn nrr nrt ntb nte nti ntk ntn ntr ntt rbb rbe rbi rbk rbl rbn rbr rbt re- reb ree rei rek rel ren rer ret rib rie rii rik ril rin rir rit rkb rke rkk rkt rle rli rll rln rlr rlt rnb rni rnn rnr rnt rrb rri rrk rrl rrn rrr rrt rtb rte rti rtk rtl rtn rtr rtt tbb tbe tbi tbk tbl tbn tbr tbt te- teb tee tei tek tel ten ter tet tib tie tii tik til tin tir tit tkb tke tkk tkl tkr tkt tle tli tlk tll tln tlr tlt tnb tne tni tnk tnl tnn tnr tnt trb tre tri trk trl trn trr trt ttb tte tti ttk ttl ttn ttr ttt