case value
in [a, b, c, d, e, f, g, h, i, j, k, l, m, n, o]
end

case value
in {a1:, b1:, c1:, d1:, e1:, f1:, g1:, h1:, i1:, j1:, k1:, l1:, m1:}
end

/(?<p1>.)(?<p2>.)(?<p3>.)(?<p4>.)(?<p5>.)(?<p6>.)(?<p7>.)(?<p8>.)(?<p9>.)(?<p10>.)(?<p11>.)(?<p12>.)(?<p13>.)(?<p14>.)(?<p15>.)/ =~ string
