{%

Examples:

```
front 3 left 10 y 77 x 30 back 99
```

%}

<axes> ::= <axis_part> *

<axes_part> ::= <axis_name> <number>

<axis_name> ::= <axis_name_absolute>
	| <axis_name_relative>

<axis_name_absolute> ::= <axis_letters_absolute>
	| "-" <axis_letters_absolute>

<axis_name_relative> ::= front | back | left | right | up | down | h | v | "?"

<axis_letters_absolute> ::= x | y | z

<number> ::= <digit> *

<digit> ::= 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 0