How can I add space in to several numbers?

[Bo Zhang]

I want to parse a file and do this :

    A  74.335 -86.474-129.317  1.00 54.12

then add space between -86.474 and -129.317. I can get the file with

    A  74.335 -86.474 -129.317  1.00 54.12

How can I do this? Thanks.

--
Best regards,

Zhang Bo (Cindy)
SMA-CSB
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