read the data by tails

1d
:
s/[1-9]/&-/g
y/123456789/012345678/
s/-0/9-/
t
x
N
x
s/-//
//b
x
s/\n/[/
s//, /g
$!{s/$/], /;x;D}
s/.*/[&]]/

Note that non-ascii characters in the above source code will be escaped (such as \x9f).

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