Multiple Sortable Lists - Separate

This example makes multiple sortable lists that are separate from one another and do not interact with each other.

Item #1.1
Item #1.2
Item #1.3
Item #1.4
Item #1.5
Item #1.6
Item #1.7
Item #1.8
Item #1.9
Item #1.10

Item #2.1
Item #2.2
Item #2.3
Item #2.4
Item #2.5
Item #2.6
Item #2.7
Item #2.8
Item #2.9
Item #2.10