-er ddd dde ddl ddm ddr de- ded dee del dem der dl- dld dle dll dlm dlr dmd dme dml dmm dmr drd dre drl drm drr ed- edd ede edl edm edr eed eee eel eem eer eld ele ell elm elr em- emd eme eml emm emr erd ere erl erm err ldd lde ldl ldm ldr led lee lel lem ler lld lle lll llm llr lmd lme lml lmm lmr lrd lrm lrr m-r mdd mde mdl mdm mdr med mee mel mem mer mld mle mll mlm mlr mmd mme mml mmm mmr mrd mre mrl mrm mrr rdd rde rdl rdm rdr re- red ree rel rem rer rld rle rll rlm rlr rmd rme rml rmm rmr rrd rrl rrm rrr