-er -up ddd dde ddi ddn ddp ddr ddu de- ded dee dei den dep der deu di- did die dii din dip dir diu dnd dne dni dnn dnp dnr dpd dpe dpi dpn dpp dpr dpu drd dre dri drn drp drr dru dud due dui dun dup dur ed- edd ede edi edn edp edr edu eed eee een eep eer eid eie eii ein eip eir eiu en- end ene eni enn enp enr enu ep- epd epe epi epn epp epr epu erd ere eri ern erp err eru eu- eud eue eui eun eup eur i-d idd ide idi idn idp idr idu ie- ied iee iei ien iep ier iid iie iii iin iip iir iiu in- ind ine ini inn inp inr inu ipd ipe ipi ipn ipp ipr ipu ir- ird ire iri irn irp irr iru iu- iud iue iui iup iur n-i ndd nde ndi ndn ndp ndr ndu ne- ned nee nei nen nep ner neu nid nie nii nin nip nir niu nne nni nnn nnp nnu npd npe npi npn npp npr npu nrd nre nri nrn nrp nrr nru nud nue nui nun nup nur nuu p-p pdd pde pdi pdn pdp pdr pdu ped pee pei pen pep per peu pid pie pii pin pip pir piu pn- pnd pne pni pnn pnp pnr pnu ppd ppe ppi ppn ppp ppr ppu prd pre pri prn prp prr pru pud pue pui pun pup pur puu rdd rde rdi rdn rdp rdr rdu re- red ree rei ren rep rer reu rid rie rii rin rip rir rnd rni rnn rnp rnr rnu rpd rpe rpi rpn rpp rpr rpu rrd rri rrn rrp rrr rru rud rue rui run rup rur ruu udd ude udi udn udp udr udu ued uee uei uen uep uer uid uie uii uin uip uir uiu un- und une uni unn unp unr unu up- upd upe upi upn upp upr upu ur- urd ure uri urn urp urr uru uue uun uur uuu