Liu's Grid Code

You have received the following codewords from Liu's Grid Code, if necessary correct each codeword,

up to one symbol could have been corrupted.

To correct a digit, drag the target of the corrected digit over$-$top of the corrupted digit. For example, if

there is a $1$ where there should be a $0,$ drag the $0$ target over$-$top of the $1$ like this.

To report the correct message, drag the target of the correct message over$-$top of the word "message"

like this.

$1$

$100000001$

$001000101$

$001011001$

$100101001$