The general syntax to find the required wake separation by consolidated wake turbulence category has the syntax matches the phrase, "X behind Y":
.CWT[Follower][Leader]
For example:
.CWTAA .MSG ZLA_ISR *** A behind A: 3 NM On Approach | 3 NM Directly Behind
.CWTHE .MSG ZLA_ISR *** H behind E: 3 NM On Approach | 3 NM Directly Behind
.CWTFC .MSG ZLA_ISR *** F behind C: 3.5 NM On Approach | 3.5 NM Directly Behind