-er bbb bbd bbe bbg bbi bbk bbn bbo bbr bbs bdb bdd bde bdg bdi bdk bdo bdr bds be- beb bed bee beg bei bek ben beo ber bes bgb bgd bge bgg bgi bgk bgn bgo bgr bgs bi- bib bid bie big bii bik bin bio bir bis bkb bke bkg bkk bkn bko bkr bks bnb bnd bne bng bni bnk bnn bno bnr bns bob bod boe bog boi bok bon boo bor bos brb brd bre brg bri brk brn bro brr brs bsb bsd bse bsg bsi bsk bsn bso bsr bss dbb dbd dbe dbg dbi dbk dbn dbo dbr dbs ddb ddd dde ddg ddi ddk ddn ddo ddr dds de- deb ded dee deg dei dek den deo der des dgd dge dgg dgi dgk dgn dgr dgs di- dib did die dig dii dik din dio dir dis dkb dke dkg dki dkk dko dkr dks dnb dnd dne dng dni dnk dnn dno dnr dns dob dod doe dog doi dok don doo dor dos drb drd dre drg dri drk drn dro drr drs dsb dsd dse dsg dsi dsk dsn dso dsr dss ebb ebd ebe ebg ebi ebk ebn ebo ebr ebs ed- edb edd ede edg edi edk edn edo edr eds eeb eed eee eeg eek een eeo eer ees egb egd ege egg egi egn ego egr egs eib eid eie eig eii eik ein eio eir eis ekb ekd eke ekg eki eko ekr eks en- enb end ene eng eni enk enn eno enr ens eo- eob eod eoe eog eoi eok eon eoo eor eos erb erd ere erg eri erk ern ero err ers es- esb esd ese esg esi esk esn eso esr ess g-d gbd gbe gbg gbi gbk gbn gbo gbr gbs gdb gdd gde gdi gdk gdn gdo gdr gds ge- geb ged gee geg gei gek gen geo ger ges ggb ggd ggg ggi ggn ggo ggr ggs gib gid gie gig gii gik gin gio gir gis gkb gkd gkn gko gks gnb gnd gne gni gnn gno gnr gns gob god goe gog goi gok gon goo gor gos grb grd gre grg gri grk grn gro grr grs gsb gsd gse gsg gsi gsk gsn gso gsr gss i-d ibb ibd ibe ibg ibi ibk ibn ibo ibr ibs idb idd ide idg idi idk idn ido idr ids ie- ied iee ieg iei iek ien ier ies igb igd ige igg igi igk ign igo igr igs iib iid iie iii iin iio iir iis ikb ike iki ikk iko ikr iks in- inb ind ine ing ini ink inn ino inr ins io- iob iod ioe iog ioi ion ioo ior ios ir- irb ird ire irg iri irk irn iro irr irs is- isb isd ise isg isi isk isn iso isr iss kbb kbd kbe kbi kbk kbn kbo kbr kbs kdb kde kdg kdk kdo kdr kds ke- keb ked kee keg kei kek ken keo ker kes kgb kgd kgi kgo kgs kib kid kie kig kii kik kin kio kir kis kkb kke kki kkk kkn kkr kks kn- knd kne kng kni knk knn kno knr kob kod koe kog koi kok kon koo kor kos krd krg kri krk krn kro krr krs ksb ksd kse ksg ksi ksk ksn kso ksr kss n-i nbb nbd nbe nbg nbi nbk nbn nbo nbr nbs ndb ndd nde ndg ndi ndk ndn ndo ndr nds ne- neb ned nee neg nei nek nen neo ner nes ngb ngd nge ngg ngi ngk ngn ngo ngs nib nid nie nig nii nik nin nio nir nis nke nki nkk nkn nko nkr nks nnb nne nng nni nnk nnn nno nns no- nob nod noe nog noi nok non noo nor nos nrb nrd nre nrg nri nrk nrn nro nrr nrs nsb nsd nse nsg nsi nsk nsn nso nsr nss o-i ob- obb obd obe obg obi obk obn obo obr obs odb odd ode odg odi odn odo odr ods oeb oed oee oeg oei oen oeo oer oes ogd oge ogg ogi ogn ogo ogs oib oid oie oii oik oin oio oir ois okb okd oke okg oki okk oko okr oks on- onb ond one ong oni onk onn ono onr ons oo- oob ood oog ooi ook oon ooo oor oos or- orb ord ore org ori ork orn oro orr ors os- osb osd ose osg osi osk osn oso osr oss rbb rbd rbe rbg rbi rbk rbn rbo rbr rbs rdb rdd rde rdg rdi rdn rdo rdr rds re- reb red ree reg rei rek ren reo rer res rgb rgd rge rgg rgi rgk rgn rgo rgr rgs rib rid rie rig rii rik rin rio rir ris rkb rke rkg rkk rko rks rnb rnd rng rni rnn rno rnr rns rob rod roe rog roi rok ron roo ror ros rrb rrd rrg rri rrk rrn rrr rrs rsb rsd rse rsg rsi rsk rsn rso rsr rss sbb sbd sbe sbg sbi sbk sbn sbo sbr sbs sdb sdd sde sdg sdi sdk sdn sdo sdr sds se- seb sed see seg sei sek sen seo ser ses sgb sgd sge sgg sgi sgk sgn sgo sgr sgs sib sid sie sig sii sik sin sio sir sis sk- skb skd ske skg ski skk sko skr sks snb snd sne sng sni snk snn sno snr sns sob sod soe sog soi sok son soo sor sos sr- srb srd sre srg sri srk srn sro srr srs ss- ssb ssd sse ssg ssi ssk ssn sso ssr sss