-er bbb bbe bbi bbk bbn bbr bbt be- beb bee bei bek ben ber bet bi- bib bie bii bik bin bir bit bkb bke bkk bkn bkr bkt bnb bne bni bnk bnn bnr bnt brb bre bri brk brn brr brt btb bte bti btk btn btr btt ebb ebe ebi ebk ebn ebr ebt eeb eee eek een eer eet eib eie eii eik ein eir eit ekb eke eki ekr ekt en- enb ene eni enk enn enr ent erb ere eri erk ern err ert etb ete eti etk etn etr ett ibb ibe ibi ibk ibn ibr ibt ie- iee iei iek ien ier iet iib iie iii iin iir iit ikb ike iki ikk ikr ikt in- inb ine ini ink inn inr int ir- irb ire iri irk irn irr irt itb ite iti itk itn itt k-t kbb kbe kbi kbk kbn kbr ke- keb kee kei kek ken ker ket kib kie kii kik kin kir kit kkb kke kki kkk kkn kkr kkt kn- kne kni knk knn knr knt kri krk krn krr krt ktb kte ktk ktn ktr ktt n-i nbb nbe nbi nbk nbn nbr nbt ne- neb nee nei nek nen ner net nib nie nii nik nin nir nit nke nki nkk nkn nkr nkt nnb nne nni nnk nnn nnt nrb nre nri nrk nrn nrr nrt ntb nte nti ntk ntn ntr ntt rbb rbe rbi rbk rbn rbr rbt re- reb ree rei rek ren rer ret rib rie rii rik rin rir rit rkb rke rkk rkt rnb rni rnn rnr rnt rrb rri rrk rrn rrr rrt rtb rte rti rtk rtn rtr rtt tbb tbe tbi tbk tbn tbr tbt te- teb tee tei tek ten ter tet tib tie tii tik tin tir tit tkb tke tkk tkr tkt tnb tne tni tnk tnn tnr tnt trb tre tri trk trn trr trt ttb tte tti ttk ttn ttr ttt