languagesystem DFLT dflt;
languagesystem latn dflt;

@VOWEL = [a e i o u];
@CONS  = [b c d f g h j k l m n p q r s t v w x y z];
@FIGURES = [zero one two three four five six seven eight nine];
@FIG_ALT1 = [zero.alt1 one.alt1 two.alt1 three.alt1 four.alt1 five.alt1 six.alt1 seven.alt1 eight.alt1 nine.alt1];
@FIG_ALT2 = [zero.alt2 one.alt2 two.alt2 three.alt2 four.alt2 five.alt2 six.alt2 seven.alt2 eight.alt2 nine.alt2];
@FIG_ALT3 = [zero.alt3 one.alt3 two.alt3 three.alt3 four.alt3 five.alt3 six.alt3 seven.alt3 eight.alt3 nine.alt3];
@PUNCT = [period comma colon semicolon hyphen endash emdash];

feature calt {

    sub space a' by a.alt3;
    sub @VOWEL a' by a.alt2;
    sub @CONS a' by a.alt1;

    sub space b' by b.alt3;
    sub @VOWEL b' by b.alt2;
    sub @CONS b' by b.alt1;

    sub space c' by c.alt3;
    sub @VOWEL c' by c.alt2;
    sub @CONS c' by c.alt1;
    
    sub space d' by d.alt3;
    sub @VOWEL d' by d.alt2;
    sub @CONS d' by d.alt1;
    
    sub space e' by e.alt3;
    sub @VOWEL e' by e.alt2;
    sub @CONS e' by e.alt1;
    
    sub space f' by f.alt3;
    sub @VOWEL f' by f.alt2;
    sub @CONS f' by f.alt1;
    
    sub space g' by g.alt3;
    sub @VOWEL g' by g.alt2;
    sub @CONS g' by g.alt1;
    
    sub space h' by h.alt3;
    sub @VOWEL h' by h.alt2;
    sub @CONS h' by h.alt1;
    
    sub space i' by i.alt3;
    sub @VOWEL i' by i.alt2;
    sub @CONS i' by i.alt1;
    
    sub space j' by j.alt3;
    sub @VOWEL j' by j.alt2;
    sub @CONS j' by j.alt1;
    
    sub space k' by k.alt3;
    sub @VOWEL k' by k.alt2;
    sub @CONS k' by k.alt1;
    
    sub space l' by l.alt3;
    sub @VOWEL l' by l.alt2;
    sub @CONS l' by l.alt1;
    
    sub space m' by m.alt3;
    sub @VOWEL m' by m.alt4;
    sub @CONS m' by m.alt1;
    
    sub space n' by n.alt3;
    sub @VOWEL n' by n.alt2;
    sub @CONS n' by n.alt1;
    
    sub space o' by o.alt3;
    sub @VOWEL o' by o.alt2;
    sub @CONS o' by o.alt1;
    
    sub space p' by p.alt3;
    sub @VOWEL p' by p.alt2;
    sub @CONS p' by p.alt1;
    
    sub space q' by q.alt3;
    sub @VOWEL q' by q.alt2;
    sub @CONS q' by q.alt1;
    
    sub space r' by r.alt3;
    sub @VOWEL r' by r.alt2;
    sub @CONS r' by r.alt1;
    
    sub space s' by s.alt3;
    sub @VOWEL s' by s.alt2;
    sub @CONS s' by s.alt1;
    
    sub space t' by t.alt3;
    sub @VOWEL t' by t.alt2;
    sub @CONS t' by t.alt1;
    
    sub space u' by u.alt3;
    sub @VOWEL u' by u.alt2;
    sub @CONS u' by u.alt1;
    
    sub space v' by v.alt3;
    sub @VOWEL v' by v.alt2;
    sub @CONS v' by v.alt1;
    
    sub space w' by w.alt3;
    sub @VOWEL w' by w.alt2;
    sub @CONS w' by w.alt1;
    
    sub space x' by x.alt3;
    sub @VOWEL x' by x.alt2;
    sub @CONS x' by x.alt1;
    
    sub space y' by y.alt3;
    sub @VOWEL y' by y.alt2;
    sub @CONS y' by y.alt1;
    
    sub space z' by z.alt3;
    sub @VOWEL z' by z.alt2;
    sub @CONS z' by z.alt1;
    
    # ==================== Umlaute ====================
    sub space adieresis' by adieresis.alt3;
    sub @VOWEL adieresis' by adieresis.alt2;
    sub @CONS adieresis' by adieresis.alt1;
    
    sub space odieresis' by odieresis.alt3;
    sub @VOWEL odieresis' by odieresis.alt2;
    sub @CONS odieresis' by odieresis.alt1;
    
    sub space udieresis' by udieresis.alt3;
    sub @VOWEL udieresis' by udieresis.alt2;
    sub @CONS udieresis' by udieresis.alt1;
    
   
   # ==================== Ziffern  ====================

   # 2. Ziffer in Folge
    sub @FIGURES @FIGURES' by @FIG_ALT1;

    # 3. Ziffer in Folge
    sub @FIG_ALT1 @FIGURES' by @FIG_ALT2;

    # 4. Ziffer in Folge
    sub @FIG_ALT2 @FIGURES' by @FIG_ALT3;
    
    # danach wieder normal
    
   
    # ==================== Ziffern nach Satzzeichen ====================
    sub @PUNCT zero' by zero.alt1;
    sub @PUNCT one' by one.alt1;
    sub @PUNCT two' by two.alt1;
    sub @PUNCT three' by three.alt1;
    sub @PUNCT four' by four.alt1;
    sub @PUNCT five' by five.alt1;
    sub @PUNCT six' by six.alt1;
    sub @PUNCT seven' by seven.alt1;
    sub @PUNCT eight' by eight.alt1;
    sub @PUNCT nine' by nine.alt1;
    
} calt;