str abc
int 10
list 1
list 1
str x
list 1
list 2
int 20
list 3
dstack2 A
int 1
at
dstack2 B
str ab
str ac
list 2
list 1
dstack2 B1
concat
dup
setvar L1
int 0
at
dstack2 C
int 0
at
dstack2 D
int 0
at
dstack2 E
getvar L1
int 2
at
int 0
at
setvar s
dvars