What do the (8ies) references in Gonzalez Lodge mean?

Latin Learning Latin
1

For example:

  1. pulcher, -chra, -chrum. Caes.–(VII. 15. 4; 77, 13). Cic. II. 19 (> 6ies> ). V. I. 72 (> 20ies> ). > Beautiful, > both lit. and fig.
2

At a guess, the number of occurrences, e.g. 6ies = sexies, 6x. But I don’t know what the references refer to.

3

4

That was my assumption as well. Thanks.