-er -up ddd dde ddi ddk ddp ddr dds ddu de- ded dee dei dek dep der des deu di- did die dii dik dip dir dis diu dke dki dkk dkp dkr dks dku dpd dpe dpi dpk dpp dpr dps dpu drd dre dri drk drp drr drs dru dsd dse dsi dsk dsp dsr dss dsu dud due dui duk dup dur dus ed- edd ede edi edk edp edr eds edu eed eee eek eep eer ees eid eie eii eik eip eir eis eiu ekd eke eki ekp ekr eks eku ep- epd epe epi epp epr eps epu erd ere eri erk erp err ers eru es- esd ese esi esk esp esr ess esu eu- eud eue eui eup eur eus i-d idd ide idi idk idp idr ids idu ie- ied iee iei iek iep ier ies iid iie iii iip iir iis iiu ike iki ikk ikr iks iku ipd ipe ipi ipp ipr ips ipu ir- ird ire iri irk irp irr irs iru is- isd ise isi isk isp isr iss isu iu- iud iue iui iup iur ius kde kdk kdp kdr kds kdu ke- ked kee kei kek kep ker kes kid kie kii kik kip kir kis kiu kke kki kkk kkp kkr kks kku kpd kpe kpi kpk kpp kpr kps kpu krd kri krk krp krr krs kru ksd kse ksi ksk ksp ksr kss ksu kud kue kui kuk kup kur kus kuu p-p pdd pde pdi pdk pdp pdr pds pdu ped pee pei pek pep per pes peu pid pie pii pik pip pir pis piu pkd pke pki pkp pkr pks pku ppd ppe ppi ppk ppp ppr pps ppu prd pre pri prk prp prr prs pru ps- psd pse psi psk psp psr pss psu pud pue pui puk pup pur pus puu rdd rde rdi rdp rdr rds rdu re- red ree rei rek rep rer res reu rid rie rii rik rip rir ris rke rkk rkp rks rku rpd rpe rpi rpk rpp rpr rps rpu rrd rri rrk rrp rrr rrs rru rsd rse rsi rsk rsp rsr rss rsu rud rue rui ruk rup rur rus ruu sdd sde sdi sdk sdp sdr sds sdu se- sed see sei sek sep ser ses seu sid sie sii sik sip sir sis siu sk- skd ske ski skk skp skr sks sku spd spe spi spk spp spr sps spu sr- srd sre sri srk srp srr srs ss- ssd sse ssi ssk ssp ssr sss ssu sud sue sui suk sup sur sus suu udd ude udi udk udp udr uds udu ued uee uei uep uer ues uid uie uii uip uir uis uiu uke uki ukk ukp ukr uku up- upd upe upi upk upp upr ups upu ur- urd ure uri urk urp urr urs uru usd use usi usk usp usr uss usu uue uur uus uuu