{}
{}
{}
{'key3':103}
{}
{}
{}
{'key3':100,'key2':101,'key4':102}	{'key4':102}
{'key3':101,'key2':102,'key4':103}	{'key2':102,'key4':103}
{'key3':102,'key2':103,'key4':104}	{'key3':102,'key2':103,'key4':104}
{'key3':103,'key2':104,'key4':105}	{'key3':103,'key2':104,'key4':105}
{'key1':1111,'key2':2222}	{'key2':2222}
{'key1':1112,'key2':2224}	{'key1':1112,'key2':2224}
{'key1':1113,'key2':2226}	{'key1':1113,'key2':2226}
{'key3':101,'key2':102,'key4':103}
{'key3':102,'key2':103,'key4':104}
{'key3':103,'key2':104,'key4':105}
{'key3':104,'key2':105,'key4':106}
{'key1':1112,'key2':2223}
{'key1':1113,'key2':2225}
{'key1':1114,'key2':2227}
{}
{}
{}
{}
{}
{}
{}
{3:2,1:0,2:0}
{1:2,2:3}
{1:2,2:3}
{'x':'y','x':'y'}
{'x':'y','x':'y'}