42 different tennis players have been included in your combinations for the first leg. Only 5 of them haven’t played a match yet:
If they won’t compete before the end of the first leg, they will be replaced in random order by the 5 highest ranked players who were not selected:
17 - Silvia Farina-Elia
18 - Alexandra Stevenson
23 - Tatiana Panova
25 - Anne Kremer
27 - Paola Suarez
After the Australian Open, there 3 more tournaments before the first leg is over. I've taken a look at the commitment lists posted on this board, and I think it's likely the number of spare cards will be reduced to 3.
We all know Sandrine and Martina are not going to play in this leg.
I think it will be very tough for Montolio to enter the main draw of the two major events, and she is not among the committed players for the new event in India.
On the other hand, Dokic's schedule includes both Tokyo and Paris, and hopefully Amelie will be back in Paris.
So, it's likely the spare cards will be Silvia, Alexandra and Tatiana.