Table:
text: Looney Tunes and Merrie Melodies filmography (1929–39)
1931
1931
Title Series Characters_ Production_Num_ Release_date
Big Man from the North LT Bosko, Honey 4500 1931-01-XX
Ain`t Nature Grand! LT Bosko 4626 1931-03-XX
Ups `n Downs LT Bosko, 4640 1931-03-XX
Dumb Patrol LT Bosko, Honey 4664 1931-05-XX
Yodeling Yokels LT Bosko, Honey 4680 1931-06-XX
Bosko`s Holiday LT Bosko, Honey 4694 1931-07-XX
The Tree`s Knees LT Bosko 4725 1931-07-XX
Lady, Play Your Mandolin! MM Animals (cartoon character), Foxy, Roxy 4645 1931-08-XX
Smile, Darn Ya, Smile! MM Foxy, Radio, Roxy 4825 1931-09-05
Bosko Shipwrecked LT Bosko 4666 1931-09-19
One More Time MM Foxy, Mugs, Roxy 4851 1931-10-03
Bosko the Doughboy LT Bosko 5017 1931-10-17

text: Looney Tunes and Merrie Melodies filmography (1929–39)
1931
1931
Title Series Characters_ Production_Num_ Release_date
You Don`t Know What You`re Doin` MM Fluffy, Piggy , The Car 4977 1931-10-31
Bosko`s Soda Fountain LT Bosko, 5045 1931-11-14
Hittin` the Trail for Hallelujah Land MM Banjo Player, Fluffy 5025 11/28/31
Bosko`s Fox Hunt LT Bosko, Bruno 5046 1931-12-12
Red-Headed Baby MM Red-Headed Baby, Toymaker 5038 1931-12-26

Question: What is the smallest production number for the LT series titled Dumb Patrol in the Looney Tunes and Merrie Melodies (1929–39) filmography in 1931?