CLB5 ->    CDC6
    MCM6 ->   CDC46
    MCM6 ->    MCM3
   CDC46 ->    MCM3
    ORC1 ->    CDC6
   CDC47 ->    MCM2
    MCM2 ->    MCM3
    MCM2 ->   CDC54
    MCM3 ->   CDC54
    ORC1 ->    MCM3
    MCM2 ->    MCM6
   CDC54 ->    MCM2
   CDC46 ->   CDC54
    MCM3 ->    ORC1
   CDC47 ->   CDC46
   CDC46 ->    MCM6
    MCM2 ->   CDC47
    CDC6 ->    ORC1
    CLN2 ->    CLN1
   CDC47 ->   CDC54
    ORC1 ->    CLB5
    CDC6 ->    MCM3
    CLB5 ->    CLN1
   CDC28 ->   CDC45
    CLN1 ->    CDC6
    CLB6 ->    ORC1
    ORC1 ->    CLN1
    CLN1 ->    ORC1
    CLB5 ->    ORC1
    CDC7 ->   CDC28
    CDC6 ->    MCM2
    SIC1 ->    CDC7
    CLN1 ->   CDC54
    CLN2 ->    CDC7
    CLN2 ->   CDC46