-er bbb bbe bbg bbi bbn bbo bbr bbs be- beb bee beg bei ben beo ber bes bez bgb bge bgg bgi bgn bgo bgr bgs bgz bi- bib bie big bii bin bio bir bis biz bnb bne bng bni bnn bno bnr bns bnz bob boe bog boi bon boo bor bos boz brb bre brg bri brn bro brr brs brz bsb bse bsg bsi bsn bso bsr bss bze bzn bzo bzr bzs bzz ebb ebe ebg ebi ebn ebo ebr ebs eeb eee eeg een eeo eer ees egb ege egg egi egn ego egr egs eib eie eig eii ein eio eir eis en- enb ene eng eni enn eno enr ens enz eo- eob eoe eog eoi eon eoo eor eos erb ere erg eri ern ero err ers erz es- esb ese esg esi esn eso esr ess eze ezo ezr ezs ezz gbe gbg gbi gbn gbo gbr gbs gbz ge- geb gee geg gei gen geo ger ges gez ggb ggg ggi ggn ggo ggr ggs ggz gib gie gig gii gin gio gir gis giz gnb gne gni gnn gno gnr gns gob goe gog goi gon goo gor gos goz grb gre grg gri grn gro grr grs gsb gse gsg gsi gsn gso gsr gss gzo gzr ibb ibe ibg ibi ibn ibo ibr ibs ibz ie- iee ieg iei ien ier ies igb ige igg igi ign igo igr igs iib iie iii iin iio iir iis in- inb ine ing ini inn ino inr ins io- iob ioe iog ioi ion ioo ior ios ir- irb ire irg iri irn iro irr irs is- isb ise isg isi isn iso isr iss ize izi izo izz n-i nbb nbe nbg nbi nbn nbo nbr nbs ne- neb nee neg nei nen neo ner nes nez ngb nge ngg ngi ngn ngo ngs nib nie nig nii nin nio nir nis niz nnb nne nng nni nnn nno nns nnz no- nob noe nog noi non noo nor nos noz nrb nre nrg nri nrn nro nrr nrs nrz nsb nse nsg nsi nsn nso nsr nss nsz nzb nze nzg nzi nzo nzs nzz o-i ob- obb obe obg obi obn obo obr obs oeb oee oeg oei oen oeo oer oes oge ogg ogi ogn ogo ogs oib oie oii oin oio oir ois oiz on- onb one ong oni onn ono onr ons oo- oob oog ooi oon ooo oor oos or- orb ore org ori orn oro orr ors orz os- osb ose osg osi osn oso osr oss oze ozo ozs ozz rbb rbe rbg rbi rbn rbo rbr rbs re- reb ree reg rei ren reo rer res rez rgb rge rgg rgi rgn rgo rgr rgs rib rie rig rii rin rio rir ris riz rnb rng rni rnn rno rnr rns rnz rob roe rog roi ron roo ror ros roz rrb rrg rri rrn rrr rrs rsb rse rsg rsi rsn rso rsr rss rzb rze rzo sbb sbe sbg sbi sbn sbo sbr sbs se- seb see seg sei sen seo ser ses sez sgb sge sgg sgi sgn sgo sgr sgs sib sie sig sii sin sio sir sis snb sne sng sni snn sno snr sns sob soe sog soi son soo sor sos soz sr- srb sre srg sri srn sro srr srs ss- ssb sse ssg ssi ssn sso ssr sss ssz sze szi szr z-g zbb zbr zbs zeb zee zen zeo zer zes zez zgb zgg zgi zgs zib zie zig zin zio zir zis ziz zne znn zno zns zo- zob zoe zog zoi zon zoo zor zos zro zrs zse zsg zsi zsz zzr zzs zzz