google docs – How to prevent restarting sub-list numbering under each chip?

The Google Doc's numbered list functionality restarts the "numbering" or "sequential posting" of the sublist, as follows:

1) first thing
a)
b)
2) second thing
a) <- The numbering of sub-lists / sequential letters restarts
b)

I want it not to restart, and it's more like this:

1) first thing
a)
b)
2) second thing
c) <- The sublist does not restart
re)

Is it possible?