-er eee eef eeg eek eel eer ef- efe eff efg efi efl efr ege egf egg egi egl egr eie eif eig eii eik eil eir eke ekf ekg eki ekl ekr ele elf elg eli elk ell elr ere erf erg eri erk erl err fee fef feg fei fek fel fer ffe fff ffg ffi ffk ffl ffr fge fgf fgg fgi fgl fgr fie fif fig fii fik fil fir fkf fkg fki fkk fkl fle flf flg fli fll flr fre frf frg fri frk frl frr ge- gee gef geg gei gek gel ger gfe gff gfi gfk gfl gfr ggg ggi ggr gie gif gig gii gik gil gir gle glf glg gli glk gll glr gre grf grg gri grk grl grr i-f ie- iee ief ieg iei iek iel ier ife iff ifg ifi ifl ifr ige igf igg igi igk igl igr iie iif iii iil iir ike ikf iki ikk ikl ikr il- ile ilf ilg ili ilk ill ilr ir- ire irf irg iri irk irl irr ke- kee kef keg kei kek kel ker kff kfg kfi kgf kgi kgl kie kif kig kii kik kil kir kke kki kkk kkl kkr kl- klf klg kli klr krf krg kri krk krl krr lee lef leg lei lek lel ler lfe lff lfg lfi lfk lfl lfr lge lgf lgg lgi lgk lgl lgr lie lif lig lii lik lil lir lkg lkl lkr lle llf llg lli llk lll llr lrf lrg lri lrk lrr re- ree ref reg rei rek rel rer rfe rff rfg rfi rfk rfl rfr rge rgf rgg rgi rgk rgr rie rif rig rii rik ril rir rke rkf rkg rkk rle rlf rlg rli rll rlr rrf rrg rri rrk rrl rrr