-er bbb bbd bbe bbi bbk bbn bbr bbs bbt bdb bdd bde bdi bdk bdr bds bdt be- beb bed bee bei bek ben ber bes bet bi- bib bid bie bii bik bin bir bis bit bkb bke bkk bkn bkr bks bkt bnb bnd bne bni bnk bnn bnr bns bnt brb brd bre bri brk brn brr brs brt bsb bsd bse bsi bsk bsn bsr bss bst btb btd bte bti btk btn btr bts btt dbb dbd dbe dbi dbk dbn dbr dbs dbt ddb ddd dde ddi ddk ddn ddr dds ddt de- deb ded dee dei dek den der des det di- dib did die dii dik din dir dis dit dkb dke dki dkk dkr dks dkt dnb dnd dne dni dnk dnn dnr dns dnt drb drd dre dri drk drn drr drs drt dsb dsd dse dsi dsk dsn dsr dss dst dtb dtd dte dti dtk dtn dtr dts dtt ebb ebd ebe ebi ebk ebn ebr ebs ebt ed- edb edd ede edi edk edn edr eds edt eeb eed eee eek een eer ees eet eib eid eie eii eik ein eir eis eit ekb ekd eke eki ekr eks ekt en- enb end ene eni enk enn enr ens ent erb erd ere eri erk ern err ers ert es- esb esd ese esi esk esn esr ess est etb etd ete eti etk etn etr ets ett i-d ibb ibd ibe ibi ibk ibn ibr ibs ibt idb idd ide idi idk idn idr ids idt ie- ied iee iei iek ien ier ies iet iib iid iie iii iin iir iis iit ikb ike iki ikk ikr iks ikt in- inb ind ine ini ink inn inr ins int ir- irb ird ire iri irk irn irr irs irt is- isb isd ise isi isk isn isr iss ist itb itd ite iti itk itn its itt k-t kbb kbd kbe kbi kbk kbn kbr kbs kdb kde kdk kdr kds kdt ke- keb ked kee kei kek ken ker kes ket kib kid kie kii kik kin kir kis kit kkb kke kki kkk kkn kkr kks kkt kn- knd kne kni knk knn knr knt krd kri krk krn krr krs krt ksb ksd kse ksi ksk ksn ksr kss kst ktb kte ktk ktn ktr kts ktt n-i nbb nbd nbe nbi nbk nbn nbr nbs nbt ndb ndd nde ndi ndk ndn ndr nds ndt ne- neb ned nee nei nek nen ner nes net nib nid nie nii nik nin nir nis nit nke nki nkk nkn nkr nks nkt nnb nne nni nnk nnn nns nnt nrb nrd nre nri nrk nrn nrr nrs nrt nsb nsd nse nsi nsk nsn nsr nss nst ntb ntd nte nti ntk ntn ntr nts ntt rbb rbd rbe rbi rbk rbn rbr rbs rbt rdb rdd rde rdi rdn rdr rds rdt re- reb red ree rei rek ren rer res ret rib rid rie rii rik rin rir ris rit rkb rke rkk rks rkt rnb rnd rni rnn rnr rns rnt rrb rrd rri rrk rrn rrr rrs rrt rsb rsd rse rsi rsk rsn rsr rss rst rtb rtd rte rti rtk rtn rtr rts rtt sbb sbd sbe sbi sbk sbn sbr sbs sbt sdb sdd sde sdi sdk sdn sdr sds sdt se- seb sed see sei sek sen ser ses set sib sid sie sii sik sin sir sis sit sk- skb skd ske ski skk skr sks skt snb snd sne sni snk snn snr sns snt sr- srb srd sre sri srk srn srr srs srt ss- ssb ssd sse ssi ssk ssn ssr sss sst stb std ste sti stk stn str sts stt tbb tbd tbe tbi tbk tbn tbr tbs tbt tdb tdd tde tdi tdk tdn tdr tds tdt te- teb ted tee tei tek ten ter tes tet tib tid tie tii tik tin tir tis tit tkb tke tkk tkr tks tkt tnb tnd tne tni tnk tnn tnr tns tnt trb trd tre tri trk trn trr trs trt tsb tsd tse tsi tsk tsn tsr tss tst ttb ttd tte tti ttk ttn ttr tts ttt