-er eee eef eeg eep eer eet ef- efe eff efg efi efp efr eft ege egf egg egi egp egr egt eie eif eig eii eip eir eit ep- epe epf epg epi epp epr ept ere erf erg eri erp err ert ete etf etg eti etp etr ett fee fef feg fei fep fer fet ffe fff ffg ffi ffp ffr fft fge fgf fgg fgi fgp fgr fgt fie fif fig fii fip fir fit fpe fpg fpi fpp fpr fpt fre frf frg fri frp frr frt fte ftf ftg fti ftp ftr ftt g-p ge- gee gef geg gei gep ger get gfe gff gfi gfp gfr gft ggg ggi ggp ggr ggt gie gif gig gii gip gir git gpe gpf gpg gpi gpp gpr gpt gre grf grg gri grp grr grt gte gtf gtg gti gtp gtr gtt i-f ie- iee ief ieg iei iep ier iet ife iff ifg ifi ifp ifr ift ige igf igg igi igp igr igt iie iif iii iip iir iit ipe ipf ipg ipi ipp ipr ipt ir- ire irf irg iri irp irr irt ite itf itg iti itp itt p-p pee pef peg pei pep per pet pfe pff pfg pfi pfp pfr pft pge pgf pgg pgi pgp pgr pgt pie pif pig pii pip pir pit ppe ppf ppg ppi ppp ppr ppt pre prf prg pri prp prr prt pt- pte ptf ptg pti ptp ptr ptt re- ree ref reg rei rep rer ret rfe rff rfg rfi rfp rfr rft rge rgf rgg rgi rgp rgr rgt rie rif rig rii rip rir rit rpe rpf rpg rpi rpp rpr rpt rrf rrg rri rrp rrr rrt rte rtf rtg rti rtp rtr rtt te- tee tef teg tei tep ter tet tfe tff tfg tfi tfp tfr tft tge tgf tgg tgi tgp tgr tgt tie tif tig tii tip tir tit tpe tpf tpg tpi tpp tpr tpt tre trf trg tri trp trr trt tte ttf ttg tti ttp ttr ttt