a0	["b00","b01"]	[{"c001":"C001","c002":"C002"},{"c011":null,"c012":"C012"}]	{"d01":["d011","d012"],"d02":["d021","d022"]}
a1	["b10"]	[{"c001":"C001","c002":"C002"}]	{"d01":["d011","d012"],"d02":null}
a2	[]	[{"c001":null,"c002":"C002"},{"c011":"C011","c012":"C012"}]	{"d01":[null,"d012"],"d02":["d021","d022"]}
a3	NULL	NULL	NULL