Preface: This is Vicardo's Best System variation
using natural lines: L1-6, L7-12, L13-18, L19-24, L25-30, L31-36
Procedure: Wait for a natural line to not show in 10 spins. (first qualifier)
After it shows, if it shows again within five spins bet that line for up to five spins.
Stop on a win.