How do I make a script loop over and over with various time delays?

Thanks

Have Script A say 'set timer1 to expire' and 'enable script B' And 'Disable Script C'

Have script B say 'Set timer1 to expire' and 'Enable Script C' and 'Disable Script A'

Have Script C say 'Set timer1 to expire' and 'Enable Script A' and 'Disable Script B'

And have all those actions have their condition as 'If Timer1 Expires' and make sure Script B and C are disabled, and Have all of them have 'Deactivate upon success' unchecked.

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