⭐ The pattern list's own example arriving in the text: ܫܰܚܠܶܦ/ܫܽܘܚܠܳܦܳܐ filed under ܚܠܦ has been quoted as the Shaphel case since p. 150, and here is the pointer that proves it. Printed on one line with ܫܽܘܬܳܦܳܐ — a fourth cross-reference PAIR set two to a line.
Both members of this line were read at 3×. In each pair the target is the head-word minus its ܘ, which is what makes ܫܬܦ certain; for this one the target could be read ܫܚܠܦ (the Shaphel stem) rather than ܚܠܦ (the base root), and the two differ by whether Nestle counts the ܫ as part of the target.