On adjective nominalisation

There are three typical forms of adjective nominalisation:

* The most used is the _-и_ suffix (I don't know why it appears as и(н) in lexc - but that will be another issue)
* The `-скер` suffix is also known and implemented
* A third way is the simple addition of posessive, plural and/or case suffixes to an adjective (e.g. ҫамрӑк (young) > ҫамрӑксем (young people))

This third way is less used than the other two but it also happens.

The question here is that currently we have that the analysis stands for either +и and +∅. We should differenciate between both. I would use for the first one +и, as it is done for скер.

Any problem?