domain-1: layer-1
domain-1: layer-2
domain-1: layer-3
domain-1: layer-4
domain-1: layer-5
domain-1: layer-6
domain-2: layer-1
domain-2: layer-2
domain-2: layer-3
domain-2: layer-4
domain-2: layer-5
domain-2: layer-6
domain-3: layer-1
domain-3: layer-2
domain-3: layer-3
domain-3: layer-4
domain-3: layer-5
domain-3: layer-6
domain-4: layer-1
domain-4: layer-2
domain-4: layer-3
domain-4: layer-4
domain-4: layer-5
domain-4: layer-6