import re


def plagiarism_check(code1: list[str], code2: list[str]) -> bool:
    c1 = " ".join(code1)
    c2 = " ".join(code2)
    if c1 == c2:
        return False

    d1 = re.findall(r"\w+", c1)
    d2 = re.findall(r"\w+", c2)

    r_cand: dict[str, str] = {}
    for v, w in zip(d1, d2):
        if v != w and not v.isdigit():
            r_cand[v] = w

    for orig, _repl in r_cand.items():
        c1 = re.sub(r"(\W)" + re.escape(orig) + r"(\W*)", r"\1PLACEHOLDER" + orig + r"\2", c1)
        c1 = re.sub(r"(\W)" + re.escape(orig), r"\1PLACEHOLDER" + orig, c1)

    for orig, repl in r_cand.items():
        c1 = re.sub(r"(\W)PLACEHOLDER" + re.escape(orig) + r"(\W)", r"\1" + repl + r"\2", c1)
        c1 = re.sub(r"(\W)PLACEHOLDER" + re.escape(orig), r"\1" + repl, c1)

    return c1 == c2