greedy matches causing problem with numbers that are prefixes of other numbers

In Polish both "kilka" and "kilkanaście" may be used as imprecise description of quantity.

Unfortunately ingreedy breaks when one number is prefix of other number.

See example of failing test in https://github.com/matkoniecz/ingreeedyfork/blob/fork/spec/ingreedy_spec.rb#L446 

(ping me in unlikely case that this project is revived - I would make PR that would add failing test case).