@startuml
skinparam actorStyle awesome

package Classes {
	usecase "Class 1" as c1
	usecase "Class 2" as c2
	usecase "Class 3" as c3
	usecase "Class 4" as c4
}

package Accounts {
	actor account1 as a1
	actor account2 as a2
	actor account3 as a3
}

c1 --> a1

c2 --> a1
c2 --> a2

c3 --> a3

c4 --> a1
c4 --> a2
c4 --> a3

@enduml