case i of
  when {1, 4, 9}:  # Executed if i is 1, 4 or 9
    statement1;
  when {11} | {13 .. 17}:  # Executed if i is 11, 13, 14, 15, 16 or 17
    statement2;
  when {42}:  # Executed only if i is 42
    statement3;
  otherwise:
    statement4;
end case;