-er -up eee eeg eep eer eex ege egg egi egp egr egu egx eie eig eii eip eir eiu eix ep- epe epg epi epp epr epu epx ere erg eri erp err eru eu- eue eug eui eup eur eux ex- exe exi exp exr exu exx g-p ge- gee geg gei gep ger geu gex ggg ggi ggp ggr ggu gie gig gii gip gir giu gpe gpg gpi gpp gpr gpu gpx gre grg gri grp grr gru grx gu- gue gug gui gup gur guu gxp ie- iee ieg iei iep ier iex ige igg igi igp igr igu iie iii iip iir iiu iix ipe ipg ipi ipp ipr ipu ipx ir- ire irg iri irp irr iru irx iu- iue iug iui iup iur ixe ixi p-p pee peg pei pep per peu pex pge pgg pgi pgp pgr pie pig pii pip pir piu pix ppe ppg ppi ppp ppr ppu ppx pre prg pri prp prr pru prx pue pug pui pup pur puu pxe pxg pxr re- ree reg rei rep rer reu rex rge rgg rgi rgp rgr rgx rie rig rii rip rir rix rpe rpg rpi rpp rpr rpu rpx rrg rri rrp rrr rru rue rug rui rup rur ruu rux rxp rxr uee ueg uei uep uer uge ugg ugi ugp ugr ugu ugx uie uig uii uip uir uiu up- upe upg upi upp upr upu upx ur- ure urg uri urp urr uru urx uue uug uur uuu uxr uxu xee xeg xep xer xeu xex xge xgi xgp xie xii xiu xix xpe xpg xpp xrx xue xui xup xxi xxp xxx