<prompt> Answer this question truthfullyWhat are the four lateral structures that start with the letter S as described in the Rules of 4?  <response>: <reason> The four lateral structures that start with S as described in the Rules of 4 are: 1. Spinocerebellar pathway 2. Spinothalamic tract 3. Spinal trigeminal nucleus 4. Sympathetic hypothalamospinal pathway. 