struct Struct_0: Struct_1 {
}

struct Struct_1: Struct_0 {
}


struct Packet_0: Packet_1 {
}

struct Packet_1: Packet_0 {
}


group Group_0 {
    Group_1
}

struct Struct_2 {
    Group_0
}

group Group_1 {
    a: Struct_2
}


struct Struct_3: Struct_4 {
}

struct Struct_4 {
    Group_2
}

group Group_2 {
    a: Struct_3
}