-er a-a aaa aad aae aaf aak aan aar ad- ada add ade adf adk adn adr aea aed aee aef aek aen aer af- afa afd afe aff afk afn afr aka akd ake akk akn akr an- ana and ane anf ank ann anr ar- ara ard are arf ark arn arr daa dad dae daf dak dan dar dda ddd dde ddf ddk ddn ddr de- dea ded dee def dek den der dfa dfd dfe dff dfk dfn dfr dka dke dkk dkr dna dnd dne dnf dnk dnn dnr dra drd dre drk drn drr eaa ead eae eaf eak ean ear ed- eda edd ede edf edk edn edr eea eed eee eef eek een eer ef- efa efd efe eff efr eka ekd eke ekf ekr en- ena end ene enf enk enn enr era erd ere erf erk ern err faa fad fae faf fak fan far fda fdd fde fdf fdk fdn fdr fea fed fee fef fek fen fer ffa ffd ffe fff ffk ffn ffr fka fkf fkk fna fnd fne fnf fnk fnn fnr fra frd fre frf frk frn frr ka- kaa kad kae kaf kak kan kar kda kde kdf kdk kdr ke- kea ked kee kef kek ken ker kfa kfd kff kke kkk kkn kkr kn- kna knd kne knf knk knn knr kra krd krf krk krn krr naa nad nae naf nak nan nar nda ndd nde ndf ndk ndn ndr ne- nea ned nee nef nek nen ner nfa nfd nfe nff nfk nfn nfr nka nke nkf nkk nkn nkr nna nne nnf nnk nnn nra nrd nre nrf nrk nrn nrr ra- raa rad rae raf rak ran rar rda rdd rde rdf rdn rdr re- rea red ree ref rek ren rer rfa rfd rfe rff rfk rfn rfr rke rkf rkk rna rnd rnn rnr rra rrd rrf rrk rrn rrr