Combination number 1 is first introduced as part of a 5th Kyu grading. Combinations are performed by count (shown below) and all the way through (i.e. 1 count all 5 moves).
From basic stance (Zenkutau Dachi):
Things to remember:
Combination Owen Jones (3rd Dan), Count Chris Lewis (6th Dan). Filmed by John O’Brien (1st Dan).