-er eee eeg eeo eep eer ees ege egg egi ego egp egr egs eie eig eii eio eip eir eis eo- eoe eog eoi eoo eop eor eos ep- epe epg epi epo epp epr eps ere erg eri ero erp err ers es- ese esg esi eso esp esr ess g-p ge- gee geg gei geo gep ger ges ggg ggi ggo ggp ggr ggs gie gig gii gio gip gir gis goe gog goi goo gop gor gos gpe gpg gpi gpo gpp gpr gps gre grg gri gro grp grr grs gse gsg gsi gso gsp gsr gss ie- iee ieg iei iep ier ies ige igg igi igo igp igr igs iie iii iio iip iir iis io- ioe iog ioi ioo iop ior ios ipe ipg ipi ipo ipp ipr ips ir- ire irg iri iro irp irr irs is- ise isg isi iso isp isr iss o-i oee oeg oei oeo oep oer oes oge ogg ogi ogo ogp ogs oie oii oio oip oir ois oo- oog ooi ooo oop oor oos op- ope opg opi opo opp opr ops or- ore org ori oro orp orr ors os- ose osg osi oso osp osr oss p-p pee peg pei peo pep per pes pge pgg pgi pgo pgp pgr pgs pie pig pii pio pip pir pis poe pog poi poo pop por pos ppe ppg ppi ppo ppp ppr pps pre prg pri pro prp prr prs ps- pse psg psi pso psp psr pss re- ree reg rei reo rep rer res rge rgg rgi rgo rgp rgr rgs rie rig rii rio rip rir ris roe rog roi roo rop ror ros rpe rpg rpi rpo rpp rpr rps rrg rri rrp rrr rrs rse rsg rsi rso rsp rsr rss se- see seg sei seo sep ser ses sge sgg sgi sgo sgp sgr sgs sie sig sii sio sip sir sis soe sog soi soo sop sor sos spe spg spi spo spp spr sps sr- sre srg sri sro srp srr srs ss- sse ssg ssi sso ssp ssr sss