-er a-a a-t aaa aae aaf aak aan aar aat aea aee aef aek aen aer aet af- afa afe aff afk afn afr aft aka ake akk akn akr an- ana ane anf ank ann anr ant ar- ara are arf ark arn arr art at- ata ate atf atn atr att eaa eae eaf eak ean ear eat eea eee eef eek een eer eet ef- efa efe eff efr eft eka eke ekf ekr ekt en- ena ene enf enk enn enr ent era ere erf erk ern err ert eta ete etf etk etn etr ett faa fae faf fak fan far fat fea fee fef fek fen fer fet ffa ffe fff ffk ffn ffr fft fka fkf fkk fkt fna fne fnf fnk fnn fnr fnt fra fre frf frk frn frr frt fta fte ftf ftk ftn ftr ftt k-t ka- kaa kae kaf kak kan kar kat ke- kea kee kef kek ken ker ket kfa kff kke kkk kkn kkr kkt kn- kna kne knf knk knn knr knt kra krf krk krn krr krt kta kte ktf ktk ktn ktr ktt naa nae naf nak nan nar nat ne- nea nee nef nek nen ner net nfa nfe nff nfk nfn nfr nft nka nke nkf nkk nkn nkr nkt nna nne nnf nnk nnn nnt nra nre nrf nrk nrn nrr nrt nta nte ntf ntk ntn ntr ntt ra- raa rae raf rak ran rar rat re- rea ree ref rek ren rer ret rfa rfe rff rfk rfn rfr rft rke rkf rkk rkt rna rnn rnr rnt rra rrf rrk rrn rrr rrt rta rte rtf rtk rtn rtr rtt taa tae taf tak tan tar tat te- tea tee tef tek ten ter tet tfa tfe tff tfk tfn tfr tft tka tke tkk tkr tkt tna tne tnf tnk tnn tnr tnt tra tre trf trk trn trr trt tta tte ttf ttk ttn ttr ttt