-er -up ddd dde ddi ddp ddr ddt ddu de- ded dee dei dep der det deu di- did die dii dip dir dit diu dpd dpe dpi dpp dpr dpt dpu drd dre dri drp drr drt dru dtd dte dti dtp dtr dtt dtu dud due dui dup dur dut ed- edd ede edi edp edr edt edu eed eee eep eer eet eid eie eii eip eir eit eiu ep- epd epe epi epp epr ept epu erd ere eri erp err ert eru etd ete eti etp etr ett etu eu- eud eue eui eup eur eut i-d idd ide idi idp idr idt idu ie- ied iee iei iep ier iet iid iie iii iip iir iit iiu ipd ipe ipi ipp ipr ipt ipu ir- ird ire iri irp irr irt iru itd ite iti itp itt itu iu- iud iue iui iup iur iut p-p pdd pde pdi pdp pdr pdt pdu ped pee pei pep per pet peu pid pie pii pip pir pit piu ppd ppe ppi ppp ppr ppt ppu prd pre pri prp prr prt pru pt- ptd pte pti ptp ptr ptt ptu pud pue pui pup pur put puu rdd rde rdi rdp rdr rdt rdu re- red ree rei rep rer ret reu rid rie rii rip rir rit rpd rpe rpi rpp rpr rpt rpu rrd rri rrp rrr rrt rru rtd rte rti rtp rtr rtt rtu rud rue rui rup rur rut ruu tdd tde tdi tdp tdr tdt tdu te- ted tee tei tep ter tet teu tid tie tii tip tir tit tiu tpd tpe tpi tpp tpr tpt tpu trd tre tri trp trr trt tru ttd tte tti ttp ttr ttt ttu tud tue tui tup tur tut tuu udd ude udi udp udr udt udu ued uee uei uep uer uet uid uie uii uip uir uit uiu up- upd upe upi upp upr upt upu ur- urd ure uri urp urr urt uru utd ute uti utp utr utt utu uue uur uut uuu