diff -r 6342d0570502 -r 2778715487a9 progs/tests/left-assoc.txt
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/progs/tests/left-assoc.txt	Sat Apr 09 09:51:00 2016 +0100
@@ -0,0 +1,12 @@
+-1	(a|ab)(c|bcd)(d*)	abcd	(0,4)(0,1)(1,4)(4,4)
+-2	(a|ab)(bcd|c)(d*)	abcd	(0,4)(0,1)(1,4)(4,4)
+-3	(ab|a)(c|bcd)(d*)	abcd	(0,4)(0,1)(1,4)(4,4)
+-4	(ab|a)(bcd|c)(d*)	abcd	(0,4)(0,1)(1,4)(4,4)
+-5	(a*)(b|abc)(c*)	abc	(0,3)(0,0)(0,3)(3,3)
+-6	(a*)(abc|b)(c*)	abc	(0,3)(0,0)(0,3)(3,3)
+-7	(a*)(b|abc)(c*)	abc	(0,3)(0,0)(0,3)(3,3)
+-8	(a*)(abc|b)(c*)	abc	(0,3)(0,0)(0,3)(3,3)
+-9	(a|ab)(c|bcd)(d|.*)	abcd	(0,4)(0,1)(1,4)(4,4)
+-10	(a|ab)(bcd|c)(d|.*)	abcd	(0,4)(0,1)(1,4)(4,4)
+-11	(ab|a)(c|bcd)(d|.*)	abcd	(0,4)(0,1)(1,4)(4,4)
+-12	(ab|a)(bcd|c)(d|.*)	abcd	(0,4)(0,1)(1,4)(4,4)