Left hand is behind the back - partner is in a right forward stance. Left hand is behind the back - partner is in a left forward stance. From an open stance place right hand behind the back. Partner is in a right forward stance. Student steps back with the left into a left forward stance and executes a left reverse outside block.
Partner steps forward with the left and punches at the right shoulder.
Student steps back with the right and executes a left inside block. Partner steps forward and punches high, student steps back with left high block. Partner steps forward and punches low, student steps back with left down block. The sequence is determined by free arm and stance of partner. Step back with the left into a fighting stance, low inside body block.