-er -up ddd dde ddg ddi ddp ddr ddu de- ded dee deg dei dep der deu dgd dge dgg dgi dgp dgr dgu di- did die dig dii dip dir diu dpd dpe dpg dpi dpp dpr dpu drd dre drg dri drp drr dru dud due dug dui dup dur ed- edd ede edg edi edp edr edu eed eee eeg eep eer egd ege egg egi egp egr egu eid eie eig eii eip eir eiu ep- epd epe epg epi epp epr epu erd ere erg eri erp err eru eu- eud eue eug eui eup eur g-d g-p gdd gde gdi gdp gdr gdu ge- ged gee geg gei gep ger geu ggd ggg ggi ggp ggr ggu gid gie gig gii gip gir giu gpd gpe gpg gpi gpp gpr gpu grd gre grg gri grp grr gru gu- gud gue gug gui gup gur guu i-d idd ide idg idi idp idr idu ie- ied iee ieg iei iep ier igd ige igg igi igp igr igu iid iie iii iip iir iiu ipd ipe ipg ipi ipp ipr ipu ir- ird ire irg iri irp irr iru iu- iud iue iug iui iup iur p-p pdd pde pdg pdi pdp pdr pdu ped pee peg pei pep per peu pgd pge pgg pgi pgp pgr pid pie pig pii pip pir piu ppd ppe ppg ppi ppp ppr ppu prd pre prg pri prp prr pru pud pue pug pui pup pur puu rdd rde rdg rdi rdp rdr rdu re- red ree reg rei rep rer reu rgd rge rgg rgi rgp rgr rid rie rig rii rip rir rpd rpe rpg rpi rpp rpr rpu rrd rrg rri rrp rrr rru rud rue rug rui rup rur ruu udd ude udg udi udp udr udu ued uee ueg uei uep uer uge ugg ugi ugp ugr ugu uid uie uig uii uip uir uiu up- upd upe upg upi upp upr upu ur- urd ure urg uri urp urr uru uue uug uur uuu