-er eee eef eek eel eer eet ef- efe eff efi efl efr eft eie eif eii eik eil eir eit eke ekf eki ekl ekr ekt ele elf eli elk ell elr elt ere erf eri erk erl err ert ete etf eti etk etl etr ett fee fef fei fek fel fer fet ffe fff ffi ffk ffl ffr fft fie fif fii fik fil fir fit fkf fki fkk fkl fkt fle flf fli fll flr flt fre frf fri frk frl frr frt fte ftf fti ftk ftl ftr ftt i-f ie- iee ief iei iek iel ier iet ife iff ifi ifl ifr ift iie iif iii iil iir iit ike ikf iki ikk ikl ikr ikt il- ile ilf ili ilk ill ilr ilt ir- ire irf iri irk irl irr irt ite itf iti itk itl itt k-t ke- kee kef kei kek kel ker ket kff kfi kie kif kii kik kil kir kit kke kki kkk kkl kkr kkt kl- klf kli klr klt krf kri krk krl krr krt kte ktf ktk ktl ktr ktt lee lef lei lek lel ler let lfe lff lfi lfk lfl lfr lft lie lif lii lik lil lir lit lkl lkr lkt lle llf lli llk lll llr llt lrf lri lrk lrr lrt lte ltf lti ltk ltl ltr ltt re- ree ref rei rek rel rer ret rfe rff rfi rfk rfl rfr rft rie rif rii rik ril rir rit rke rkf rkk rkt rle rlf rli rll rlr rlt rrf rri rrk rrl rrr rrt rte rtf rti rtk rtl rtr rtt te- tee tef tei tek tel ter tet tfe tff tfi tfk tfl tfr tft tie tif tii tik til tir tit tke tkk tkl tkr tkt tle tlf tli tlk tll tlr tlt tre trf tri trk trl trr trt tte ttf tti ttk ttl ttr ttt