Table:
text: List of Whose Line Is It Anyway? UK episodes
Series 4
Series 4
Date_ Episode Performer_1 Performer_2 Performer_3 Performer_4
21 March 1992 9 Ron West Ryan Stiles Colin Mochrie Greg Proops
28 March 1992 10 Sam Johnson Jane Brucker Ryan Stiles Chip Esten
3 April 1992 11 Jim Meskimen Christopher Smith Ryan Stiles Chip Esten
10 April 1992 12 Greg Proops Ron West Ryan Stiles Brad Sherwood
17 April 1992 13 New York Compilation New York Compilation New York Compilation New York Compilation

text: List of Whose Line Is It Anyway? UK episodes
Series 4
Series 4
Date_ Episode Performer_1 Performer_2 Performer_3 Performer_4
24 January 1992 1 Jim Sweeney Steve Steen Stephen Frost Tony Slattery
31 January 1992 2 Greg Proops Paul Merton Ryan Stiles Josie Lawrence
7 February 1992 3 Jim Sweeney Paul Merton Steve Steen Tony Slattery
14 February 1992 4 Jim Sweeney Stephen Frost Josie Lawrence Tony Slattery
21 February 1992 5 Greg Proops Ryan Stiles Chip Esten Tony Slattery
28 February 1992 6 London Compilation London Compilation London Compilation London Compilation
7 March 1992 7 Greg Proops Ryan Stiles Colin Mochrie Brad Sherwood
14 March 1992 8 Greg Proops Archie Hahn Ryan Stiles Chip Esten

Question: What is the sum of the series 4 episode numbers in the UK episodes of List of Whose Line Is It Whatever where Chip Esten was the 4th cast member and Christopher Smith was the 2nd cast member?