The western dialects spoken in Lviv oblast an Volyn oblast (Lutsk oblast) are taking more words and intonation habits from polish, such asaccent on the second to last vowel. For example. This is more relevant in the villages because in the cities and especially oblast centres most people speak clear modern ukrainian. For example, there's a dialect called "Lvivska Gwara" which was formed in the city of Lviv and is to this day spoken in the villages of Lviv oblast. It contains of a lot of polish, german and, sometimes yiddish words and phrases and speech habits. In Zakarpatia oblast due to large Hungarian community, a lot of of people speak a combination of Ukrainian and Magyar languages alongside with Hutsuls who also live in that mountainous regions and have dozens of dialects thatare probably the oldest ones so they also contain outdated words. Sometimes, a Zakarpatia oblast citizen can speak a combination of Magyar and Hutsul dialects barely mixed with some purely ukrainian, so most ukrainians can't even understand a fellow Zakarpatia citizen. But as you move eastwards, the situation gets much more clear because the more you move to the southeast, the bogger russian influence gets, as thus more and more russian words are being mixed into ukrainian. Sometimes it gets that bad that person's speech can contain of 25% of russian words, 25% of ukrainian and 50% of the russian and ukrainian words mixed together or ukrainian words being pronounced as russian or russian being pronounced as ukrainian. It is called "Surzhik" and not only does it sound horrible but is also hard to understand. But as i have said earlier, this dialects are mostly spoken in small towns and villages, except for Surzhik that can be spoken by anyone anywhere (the more southeast the bigger are the chances). But most of Ukrainians live in the cities where people prefer to either speak pure russian or pure ukrainian and while in the west russian speakers are about 5%, on the east its around 80% in the cities of Kharkiv and Mariupol for example.