-er ddd dde ddi ddn ddo ddp ddr de- ded dee dei den deo dep der di- did die dii din dio dip dir dnd dne dni dnn dno dnp dnr dod doe doi don doo dop dor dpd dpe dpi dpn dpo dpp dpr drd dre dri drn dro drp drr ed- edd ede edi edn edo edp edr eed eee een eeo eep eer eid eie eii ein eio eip eir en- end ene eni enn eno enp enr eo- eod eoe eoi eon eoo eop eor ep- epd epe epi epn epo epp epr erd ere eri ern ero erp err i-d idd ide idi idn ido idp idr ie- ied iee iei ien iep ier iid iie iii iin iio iip iir in- ind ine ini inn ino inp inr io- iod ioe ioi ion ioo iop ior ipd ipe ipi ipn ipo ipp ipr ir- ird ire iri irn iro irp irr n-i ndd nde ndi ndn ndo ndp ndr ne- ned nee nei nen neo nep ner nid nie nii nin nio nip nir nne nni nnn nno nnp no- nod noe noi non noo nop nor npd npe npi npn npo npp npr nrd nre nri nrn nro nrp nrr o-i odd ode odi odn odo odp odr oed oee oei oen oeo oep oer oid oie oii oin oio oip oir on- ond one oni onn ono onp onr oo- ood ooi oon ooo oop oor op- opd ope opi opn opo opp opr or- ord ore ori orn oro orp orr p-p pdd pde pdi pdn pdo pdp pdr ped pee pei pen peo pep per pid pie pii pin pio pip pir pn- pnd pne pni pnn pno pnp pnr pod poe poi pon poo pop por ppd ppe ppi ppn ppo ppp ppr prd pre pri prn pro prp prr rdd rde rdi rdn rdo rdp rdr re- red ree rei ren reo rep rer rid rie rii rin rio rip rir rnd rni rnn rno rnp rnr rod roe roi ron roo rop ror rpd rpe rpi rpn rpo rpp rpr rrd rri rrn rrp rrr