lex start
{
	ignore /space+/
	literal '*', '(', ')'
	token id /[a-zA-Z_]+/
}

def item 
	[id]
|	['(' item* ')']

def start 
	[item*]

Input: start = parse start( stdin )

match Input [ItemList: item*]

for I: item* in repeat( ItemList )
	print( I '\n' )

for I: item* in rev_repeat( ItemList )
	print( I '\n' )