-er ddd dde ddi ddp ddr dds ddz de- ded dee dei dep der des dez di- did die dii dip dir dis diz dpd dpe dpi dpp dpr dps dpz drd dre dri drp drr drs drz dsd dse dsi dsp dsr dss dsz dzd dze dzi dzp dzr dzs ed- edd ede edi edp edr eds eed eee eep eer ees eid eie eii eip eir eis ep- epd epe epi epp epr eps epz erd ere eri erp err ers erz es- esd ese esi esp esr ess eze ezr ezs ezz i-d idd ide idi idp idr ids ie- ied iee iei iep ier ies iid iie iii iip iir iis ipd ipe ipi ipp ipr ips ir- ird ire iri irp irr irs is- isd ise isi isp isr iss ize izi izz p-p pdd pde pdi pdp pdr pds pdz ped pee pei pep per pes pez pid pie pii pip pir pis piz ppd ppe ppi ppp ppr pps ppz prd pre pri prp prr prs prz ps- psd pse psi psp psr pss pzp rdd rde rdi rdp rdr rds re- red ree rei rep rer res rez rid rie rii rip rir ris riz rpd rpe rpi rpp rpr rps rpz rrd rri rrp rrr rrs rsd rse rsi rsp rsr rss rze sdd sde sdi sdp sdr sds sdz se- sed see sei sep ser ses sez sid sie sii sip sir sis spd spe spi spp spr sps spz sr- srd sre sri srp srr srs ss- ssd sse ssi ssp ssr sss ssz szd sze szi szp szr zds zed zee zep zer zes zez zid zie zip zir zis ziz zpe zpi zpp zpr zrp zrs zse zsi zsz zzr zzs zzz