0 groups, zero matches
1 group, multiple matches, String and FixedString
[['hello'],['world']]
[['hello'],['world']]
[['hello'],['world']]
[['hello'],['world']]
[['hello'],['world']]
[['hello'],['world']]
mutiple groups, multiple matches
[['abc','111'],['def','222'],['ghi','333'],['"jkl mno"','"444 foo bar"']]
big match
0	0	0	[]
260	1	1	[156]
520	1	3	[156,156,156]
lots of matches
0	0	0	0
260	1	260	260
520	1	520	520
lots of groups
0	0	0	[]
260	100	2	[1,1]
520	100	5	[1,1,1,1,1]