PSPICE-FOR-TI: generate a 4 bit pattern

Part Number: PSPICE-FOR-TI

Tool/software:

Hello,

Would you be able to help me generate a 4 bit pattern which is driven by a system clock as follows:

          S4     S3     S2     S1

          1        0        1        0        State 1

          1        1        0        0        State 2

          0        1        0        1        State 3

                                                  Back to state 1

 Are you aware of any blocks in PSpice in which I can do this?

Thank you, Keith