Sorting array by sequences and alphabetically

sort_by_sequence.rb

sequence1 = %w[d c b]
sequence2 = %w[e a f]
base = %w[z a c d f y b]

def sort_by_sequence(sequence:)
  array = yield
  array.select { |el| sequence.include?(el) }.sort do |left, right|
    sequence.index(left) <=> sequence.index(right)
  end | sort_by_alfabet { array }
end

def sort_by_alfabet
  yield.sort {|left, right| left <=> right }
end

sort_by_sequence(sequence: sequence1) {
  sort_by_sequence(sequence: sequence1) {
    base
  }
}