Flip file to insert a picture books to find information
the old old people do it, and then came to organize to bring
and sent to collect evidence as another round
must be a picture book, success 2
book/day
which must be made within a picture books graph otdr, enter a value
power,
enter the ground,
calculate the total distance from the
by the drum number with Bookmark เลนจ์
, put it all,
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