-er ddd dde ddf ddl ddn ddr de- ded dee def del den der dfd dfe dff dfl dfn dfr dl- dld dle dlf dll dlr dnd dne dnf dnl dnn dnr drd dre drl drn drr ed- edd ede edf edl edn edr eed eee eef eel een eer ef- efd efe eff efl efr eld ele elf ell eln elr en- end ene enf enl enn enr erd ere erf erl ern err fdd fde fdf fdl fdn fdr fed fee fef fel fen fer ffd ffe fff ffl ffn ffr fld fle flf fll fln flr fnd fne fnf fnl fnn fnr frd fre frf frl frn frr ldd lde ldf ldl ldn ldr led lee lef lel len ler lfd lfe lff lfl lfn lfr lld lle llf lll lln llr lnd lne lnl lnn lnr lrd lrf lrn lrr ndd nde ndf ndl ndn ndr ne- ned nee nef nel nen ner nfd nfe nff nfl nfn nfr nld nle nlf nll nln nlr nne nnf nnl nnn nrd nre nrf nrl nrn nrr rdd rde rdf rdl rdn rdr re- red ree ref rel ren rer rfd rfe rff rfl rfn rfr rld rle rlf rll rln rlr rnd rnn rnr rrd rrf rrl rrn rrr