ansible-playbook -i hosts some.yml --list-hosts --list-tasks
play #1 (group.main): host count=2
server1
server2
play #1 (group.main): TAGS: []
role1 - task1 ...
role1 - task2 ...
play #2 (group1) host count=0
play #2 (group1): TAGS: []
play #3 (group2): host count=0
play #3 (group2): TAGS: []
play #4 (group4): host count=0
play #4 (group4): TAGS: []
role1 - task1
role1 - task2
role1 - task3
play #5 (group5): host count=0
play #5 (group5): TAGS: []
play #6 (group6): host count=0
play #6 (group6): TAGS: []