We have a language

$$

$=$

$\{$

$0$

$$

$1$

$$

$0$

$$

$|$

$$

$=$

$$

$+$

$$

$,$

$$

$,$

$$

$,$

$$

$>=$

$0$

$\}$

$.$

$$Note that

$$

$$contains strings such as

$$

$,$

$0$

$1$

$1$

$0$

$,$

$0$

$0$

$0$

$1$

$1$

$1$

$1$

$0$

$,$

$$etc