create 10 10 .
set 9 0 x
push_back_column 10 s h k l p j i l r e
set 4 8 i
pop_back_column
pop_back_row
push_back_column 9 k m x o f n d q t
set 6 3 c
push_back_row 11 y f j c j d q g j a o
set 8 10 u
set 0 6 i
set 8 6 p
get 2 10 x
pop_back_row
push_back_column 9 g l s h h h n p q
get 6 11 n
push_back_column 9 g k r s w g q e j
push_back_column 9 i j b m o a f h j
pop_back_column
push_back_column 9 x q c d r l t b r
get 0 0 .
pop_back_column
pop_back_column
push_back_column 9 z q e q x s i r k
set 4 11 t
push_back_row 13 v r j y f m q g b j p i u
pop_back_column
pop_back_row
get 3 7 .
set 4 2 o
get 6 10 d
set 8 0 t
get 6 0 .
get 6 6 .
set 1 0 z
set 3 11 o
set 0 3 l
set 4 5 p
set 1 0 d
push_back_column 9 q a s r d u i i c
pop_back_row
set 4 3 d
get 7 12 i
set 7 2 o
set 1 6 y
pop_back_column
pop_back_row
pop_back_column
push_back_row 11 z x m o z y b g o p z
pop_back_column
push_back_column 8 l m q p f c r r
get 0 9 .
pop_back_row
pop_back_row
set 3 3 e
set 1 7 x
set 0 0 u
set 0 2 t
set 5 6 d
push_back_row 11 b w f y m e s w u c l
set 2 0 k
set 5 3 y
set 2 6 v
push_back_column 7 u s i e r h s
push_back_row 12 u x a t b e n p e f q k
set 7 3 p
pop_back_row
pop_back_row
set 5 7 q
get 2 4 .
set 4 6 s
set 3 0 m
set 4 4 k
get 4 8 i
push_back_row 12 h y q b f m n b k z f a
set 4 0 r
get 3 1 .
get 0 11 u
set 4 6 d
push_back_column 7 d l t f x i g
set 1 11 v
set 6 12 h
get 6 11 a
set 0 0 g
push_back_row 13 w u p i o q g c x a c i f
push_back_column 8 h f g z y a y m
pop_back_column
pop_back_row
set 3 9 j
set 3 0 e
get 3 8 .
get 0 6 i
push_back_column 7 w o j x q h m
set 2 10 o
pop_back_row
get 4 8 i
set 4 7 x
push_back_column 6 a x g j r s
get 1 0 d
set 0 9 r
set 5 4 u