([1,NULL],2,'a')	['foo',NULL,'bar']	[['123'],['456','789']]	qqqq	['zzz','xxx']	[42,43]
[1,NULL]	2	a	['zzz','xxx']	[42,43]	qqqq
2	[0,1]	2	a	0
1	3
[['123'],['456','789']]	2	[1,2]	[[0],[0,0]]
([1,NULL],2,'a')	['foo',NULL,'bar']	[['123'],['456','789']]	qqqq	['zzz','xxx']	[42,43]
[1,NULL]	2	a	['zzz','xxx']	[42,43]	qqqq
2	[0,1]	2	a	0
1	3
[['123'],['456','789']]	2	[1,2]	[[0],[0,0]]