-er bbb bbd bbe bbi bbn bbo bbr bbs bdb bdd bde bdi bdo bdr bds be- beb bed bee bei ben beo ber bes bi- bib bid bie bii bin bio bir bis bnb bnd bne bni bnn bno bnr bns bob bod boe boi bon boo bor bos brb brd bre bri brn bro brr brs bsb bsd bse bsi bsn bso bsr bss dbb dbd dbe dbi dbn dbo dbr dbs ddb ddd dde ddi ddn ddo ddr dds de- deb ded dee dei den deo der des di- dib did die dii din dio dir dis dnb dnd dne dni dnn dno dnr dns dob dod doe doi don doo dor dos drb drd dre dri drn dro drr drs dsb dsd dse dsi dsn dso dsr dss ebb ebd ebe ebi ebn ebo ebr ebs ed- edb edd ede edi edn edo edr eds eeb eed eee een eeo eer ees eib eid eie eii ein eio eir eis en- enb end ene eni enn eno enr ens eo- eob eod eoe eoi eon eoo eor eos erb erd ere eri ern ero err ers es- esb esd ese esi esn eso esr ess i-d ibb ibd ibe ibi ibn ibo ibr ibs idb idd ide idi idn ido idr ids ie- ied iee iei ien ier ies iib iid iie iii iin iio iir iis in- inb ind ine ini inn ino inr ins io- iob iod ioe ioi ion ioo ior ios ir- irb ird ire iri irn iro irr irs is- isb isd ise isi isn iso isr iss n-i nbb nbd nbe nbi nbn nbo nbr nbs ndb ndd nde ndi ndn ndo ndr nds ne- neb ned nee nei nen neo ner nes nib nid nie nii nin nio nir nis nnb nne nni nnn nno nns no- nob nod noe noi non noo nor nos nrb nrd nre nri nrn nro nrr nrs nsb nsd nse nsi nsn nso nsr nss o-i ob- obb obd obe obi obn obo obr obs odb odd ode odi odn odo odr ods oeb oed oee oei oen oeo oer oes oib oid oie oii oin oio oir ois on- onb ond one oni onn ono onr ons oo- oob ood ooi oon ooo oor oos or- orb ord ore ori orn oro orr ors os- osb osd ose osi osn oso osr oss rbb rbd rbe rbi rbn rbo rbr rbs rdb rdd rde rdi rdn rdo rdr rds re- reb red ree rei ren reo rer res rib rid rie rii rin rio rir ris rnb rnd rni rnn rno rnr rns rob rod roe roi ron roo ror ros rrb rrd rri rrn rrr rrs rsb rsd rse rsi rsn rso rsr rss sbb sbd sbe sbi sbn sbo sbr sbs sdb sdd sde sdi sdn sdo sdr sds se- seb sed see sei sen seo ser ses sib sid sie sii sin sio sir sis snb snd sne sni snn sno snr sns sob sod soe soi son soo sor sos sr- srb srd sre sri srn sro srr srs ss- ssb ssd sse ssi ssn sso ssr sss