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//0x18 bytes (sizeof)
struct _ALPC_COMPLETION_PACKET_LOOKASIDE_ENTRY
{
    struct _SINGLE_LIST_ENTRY ListEntry;                                    //0x0
    VOID* Packet;                                                           //0x8
    struct _ALPC_COMPLETION_PACKET_LOOKASIDE* Lookaside;                    //0x10
};