-er bbb bbe bbg bbi bbn bbo bbr bbs be- beb bee beg bei ben beo ber bes bgb bge bgg bgi bgn bgo bgr bgs bi- bib bie big bii bin bio bir bis bnb bne bng bni bnn bno bnr bns bob boe bog boi bon boo bor bos brb bre brg bri brn bro brr brs bsb bse bsg bsi bsn bso bsr bss 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 eo- eob eoe eog eoi eon eoo eor eos erb ere erg eri ern ero err ers es- esb ese esg esi esn eso esr ess gbe gbg gbi gbn gbo gbr gbs ge- geb gee geg gei gen geo ger ges ggb ggg ggi ggn ggo ggr ggs gib gie gig gii gin gio gir gis gnb gne gni gnn gno gnr gns gob goe gog goi gon goo gor gos grb gre grg gri grn gro grr grs gsb gse gsg gsi gsn gso gsr gss ibb ibe ibg ibi ibn ibo ibr ibs 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 n-i nbb nbe nbg nbi nbn nbo nbr nbs ne- neb nee neg nei nen neo ner nes ngb nge ngg ngi ngn ngo ngs nib nie nig nii nin nio nir nis nnb nne nng nni nnn nno nns no- nob noe nog noi non noo nor nos nrb nre nrg nri nrn nro nrr nrs nsb nse nsg nsi nsn nso nsr nss 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 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 os- osb ose osg osi osn oso osr oss rbb rbe rbg rbi rbn rbo rbr rbs re- reb ree reg rei ren reo rer res rgb rge rgg rgi rgn rgo rgr rgs rib rie rig rii rin rio rir ris rnb rng rni rnn rno rnr rns rob roe rog roi ron roo ror ros rrb rrg rri rrn rrr rrs rsb rse rsg rsi rsn rso rsr rss sbb sbe sbg sbi sbn sbo sbr sbs se- seb see seg sei sen seo ser ses 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 sr- srb sre srg sri srn sro srr srs ss- ssb sse ssg ssi ssn sso ssr sss