-er ddd dde ddi ddm ddn ddp ddr de- ded dee dei dem den dep der di- did die dii dim din dip dir dmd dme dmi dmm dmn dmp dmr dnd dne dni dnm dnn dnp dnr dpd dpe dpi dpm dpn dpp dpr drd dre dri drm drn drp drr ed- edd ede edi edm edn edp edr eed eee eem een eep eer eid eie eii eim ein eip eir em- emd eme emi emm emn emp emr en- end ene eni enm enn enp enr ep- epd epe epi epm epn epp epr erd ere eri erm ern erp err i-d idd ide idi idm idn idp idr ie- ied iee iei iem ien iep ier iid iie iii iim iin iip iir im- imd ime imi imm imn imp in- ind ine ini inm inn inp inr ipd ipe ipi ipm ipn ipp ipr ir- ird ire iri irm irn irp irr m-r mdd mde mdi mdm mdn mdp mdr med mee mei mem men mep mer mi- mid mie mii mim min mip mir mmd mme mmi mmm mmn mmp mmr mne mni mnm mnn mnp mnr mpd mpe mpi mpm mpn mpp mpr mrd mre mri mrm mrn mrp mrr n-i ndd nde ndi ndm ndn ndp ndr ne- ned nee nei nem nen nep ner nid nie nii nim nin nip nir nmd nme nmi nmm nmn nmp nmr nne nni nnm nnn nnp npd npe npi npm npn npp npr nrd nre nri nrm nrn nrp nrr p-p pdd pde pdi pdm pdn pdp pdr ped pee pei pem pen pep per pid pie pii pim pin pip pir pmd pme pmi pmm pmn pmp pmr pn- pnd pne pni pnm pnn pnp pnr ppd ppe ppi ppm ppn ppp ppr prd pre pri prm prn prp prr rdd rde rdi rdm rdn rdp rdr re- red ree rei rem ren rep rer rid rie rii rim rin rip rir rmd rme rmi rmm rmn rmp rmr rnd rni rnm rnn rnp rnr rpd rpe rpi rpm rpn rpp rpr rrd rri rrm rrn rrp rrr