-er eee eef eeg eek een eer ees eet ef- efe eff efg efi efr efs eft ege egf egg egi egn egr egs egt eie eif eig eii eik ein eir eis eit eke ekf ekg eki ekr eks ekt en- ene enf eng eni enk enn enr ens ent ere erf erg eri erk ern err ers ert es- ese esf esg esi esk esn esr ess est ete etf etg eti etk etn etr ets ett fee fef feg fei fek fen fer fes fet ffe fff ffg ffi ffk ffn ffr ffs fft fge fgf fgg fgi fgn fgr fgs fgt fie fif fig fii fik fin fir fis fit fkf fkg fki fkk fkt fne fnf fng fni fnk fnn fnr fns fnt fre frf frg fri frk frn frr frs frt fse fsf fsg fsi fsk fsn fsr fss fst fte ftf ftg fti ftk ftn ftr fts ftt ge- gee gef geg gei gek gen ger ges get gfe gff gfi gfk gfr gfs gft ggg ggi ggn ggr ggs ggt gie gif gig gii gik gin gir gis git gkn gks gkt gne gnf gni gnn gnr gns gnt gre grf grg gri grk grn grr grs grt gse gsf gsg gsi gsk gsn gsr gss gst gte gtf gtg gti gtk gtn gtr gts gtt i-f ie- iee ief ieg iei iek ien ier ies iet ife iff ifg ifi ifn ifr ifs ift ige igf igg igi igk ign igr igs igt iie iif iii iin iir iis iit ike ikf iki ikk ikr iks ikt in- ine inf ing ini ink inn inr ins int ir- ire irf irg iri irk irn irr irs irt is- ise isf isg isi isk isn isr iss ist ite itf itg iti itk itn its itt k-t ke- kee kef keg kei kek ken ker kes ket kff kfg kfi kfs kgf kgi kgs kie kif kig kii kik kin kir kis kit kke kki kkk kkn kkr kks kkt kn- kne knf kng kni knk knn knr knt krf krg kri krk krn krr krs krt kse ksf ksg ksi ksk ksn ksr kss kst kte ktf ktg ktk ktn ktr kts ktt n-i ne- nee nef neg nei nek nen ner nes net nfe nff nfi nfk nfn nfr nfs nft nge ngf ngg ngi ngk ngn ngs ngt nie nif nig nii nik nin nir nis nit nke nkf nki nkk nkn nkr nks nkt nne nnf nng nni nnk nnn nns nnt nre nrf nrg nri nrk nrn nrr nrs nrt nse nsf nsg nsi nsk nsn nsr nss nst nte ntf ntg nti ntk ntn ntr nts ntt re- ree ref reg rei rek ren rer res ret rfe rff rfg rfi rfk rfn rfr rfs rft rge rgf rgg rgi rgk rgn rgr rgs rgt rie rif rig rii rik rin rir ris rit rke rkf rkg rkk rks rkt rng rni rnn rnr rns rnt rrf rrg rri rrk rrn rrr rrs rrt rse rsf rsg rsi rsk rsn rsr rss rst rte rtf rtg rti rtk rtn rtr rts rtt se- see sef seg sei sek sen ser ses set sfe sff sfg sfi sfk sfn sfr sfs sft sge sgf sgg sgi sgk sgn sgr sgs sgt sie sif sig sii sik sin sir sis sit sk- ske skf skg ski skk skr sks skt sne snf sng sni snk snn snr sns snt sr- sre srf srg sri srk srn srr srs srt ss- sse ssf ssg ssi ssk ssn ssr sss sst ste stf stg sti stk stn str sts stt te- tee tef teg tei tek ten ter tes tet tfe tff tfg tfi tfk tfn tfr tfs tft tge tgf tgg tgi tgk tgn tgr tgs tgt tie tif tig tii tik tin tir tis tit tke tkg tkk tkr tks tkt tne tnf tng tni tnk tnn tnr tns tnt tre trf trg tri trk trn trr trs trt tse tsf tsg tsi tsk tsn tsr tss tst tte ttf ttg tti ttk ttn ttr tts ttt