Complex sentence: In variation P2, each number "n" is coded as "n" +1, and because there will then always be at least one bit that is a 1, the leftmost 1 of the resulting code is omitted.
Split into simpler sentences: In variation P2, each number "n" is coded as "n" +1. Because there will then always be at least one bit that is a 1, the leftmost 1 of the resulting code is omitted.