RSS Filter shows without season

[nMaib0]

is it possible to create filters only for episodes?

These are the current filters:

s(\d+)e(\d+)
(\d+)x(\d+)
(\d{4}[.\-]\d{1,2}[.\-]\d{1,2})
(\d{1,2}[.\-]\d{1,2}[.\-]\d{4})

This wouldn't work with shows like "The Night Of" that have episodes numbered by Part[\s\S][1-9] or anime with episodes numbered -[\s\S](\d+)[\s\S][\[\(]

Edit: I tried adding [\s\S]-[\s\S](\d{1})(\d{1})[\s\S][\[\(] in order to match the first number as season and the second as episode but it doesn't work. Maybe I am doing something wrong.