## Examples

### Natural Number: 9

a (a (a (a (a (a (a (a (a c))))))))

### Natural Number: 16

a(a(a(a(a(a(a(a(a(a(a(a(a(a(a(a c)))))))))))))))

### Seventh Fibnacci Word

[a b a a b a b a a b a a b a b a a b a b a]

### Binary Numbers

/* [0,1,2,3,...,15] in MSB
where preceding "a"s are removed. */
c [] (
c [b] (
c [b a] (
c [b b] (
c [b a a] (
c [b a b] (
c [b b a] (
c [b b b] (
c [b a a a] (
c [b a a b] (
c [b a b a] (
c [b a b b] (
c [b b a a] (
c [b b a b] (
c [b b b a] (
c [b b b b] (
n))))))))))))))))

### Tree-Drawing L-System

/* Tree-Drawing Pattern generated by following L-System:
S -> f
f -> f[+f]f[-f]f */
[f lpar plus f rpar f lpar minus f rpar f lpar plus f lpar plus f rpar f lpar minus f rpar f rpar f lpar plus f rpar f lpar minus f rpar f lpar minus f lpar plus f rpar f lpar minus f rpar f rpar f lpar plus f rpar f lpar minus f rpar f]

### a^{n}b^{n}

[a a a a a a a a a a a a a a a a b b b b b b b b b b b b b b b b]

### ababâ€¦

[a b a b a b a b a b a b a b a b a b a b a b a b a b a b a b a b ]

### English-French Translation

seq (tr [I like him] [Je le aime bien]) (tr [I like her] [Je la aime bien])