foreach (var line in lines)
{
int vowels_count = line.Count(x => vowels.Contains(x));
int consonants_count = line.Count(x => consonants.Contains(x));
if (vowels_count > consonants_count)
Console.WriteLine(line);
int vowels_count = line.Count(x => vowels.Contains(x));
int vowels_count = 0;
foreach(var x in line)
{
if (vowels.Contains(x))
vowels_count++;
}