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efs eft ens ern ers fen fer fes fet fie fin fir fit ifs inn ins ire its net nit ref rei res ret rif rin sei sen ser set sin sir sit sri ten tie tin tis

efts erns erst fens fern fest fets fine fins fire firn firs fist fits fret frit inns ires neif nest nets nine nite nits refs reft reif rein reis rent rest rets rife rifs rift rins rise rite seif sent serf sift sine sire site snit stir tens tern tier ties tine tins tire tref tres