first
scalar: 4
4 item(s): [w], [x], [y], [z]
scalar: 1
1 item(s): [w]
scalar: 1
1 item(s): [w]
second
scalar: 4
4 item(s): [w], [x], [y], [z]
scalar: 1
1 item(s): [w]
scalar: 1
1 item(s): [w]
third
scalar: 4
4 item(s): [w], [x], [y], [z]
scalar: 1
1 item(s): [w]
scalar: 1
1 item(s): [w]
fourth
scalar: 4
4 item(s): [w], [x], [y], [z]
scalar: 1
1 item(s): [w]
scalar: 1
1 item(s): [w]