Table:
Year

Title

Network

Role

Notes

Ref.

2007

Mackerel Run

SBS

Baek Heon

2008

Working Mom

Park In-seong

King Sejong the Great

KBS1

Shin Suk-ju

2009

My Fair Lady

KBS2

Jung-sik

2010

Glad to Love You

Dong-hoon

2011

Lie to Me

SBS

Park Hoon

Brain

KBS2

Yeo Bong-gu

[12]

2012

What's Up

MBN

Director Oh

Just an Ordinary Love Story

KBS2

Han Jae-min

Monster

JTBC

Cha Eun-oh

My Daughter Seo-young

KBS2

Man-se, Ho-jung's blind date

Episode 20 (cameo)

2013

She Is Wow

tvN

Ji Seong-ki

[13]

2014

Angel's Revenge

KBS2

Seo Ji-seok

2015

Let's Eat 2

tvN

Lee Sang-woo

[14][15]

I've Got My Eye on You

SBS

Yeom Ki-ho

2016

One More Happy Ending

MBC

Goo Hae-joon

[16]

Hey Ghost, Let's Fight

tvN

Joo Hye-seong

[17]

2017

Whisper

SBS

Kang Jung-il

[18][19]

2018

Voice 2

OCN

Bang Je-soo

[20]

2019

Haechi

SBS

Park Moon-soo

[21]

Please ascertain the quantity of rows and columns within the provided table. Output the final answer as JSON in the format {"row_number": "m", "column_number": "n"}.

This table has 21 rows and 6 columns. Thus, the final answer is {"row_number": "21", "column_number": "6"}.