static L<S> switcheroo_themap = ll(

  "mine", "yours",

  "my", "your",

  "you are", "i am",

  "are you", "am i",

  "you're", "i'm",

  "you've", "i've",

  "me", "you",

  "i", "you",

);

static S switcheroo(S s) {

  L<S> tok = nlTok5(s);

  for (int i = 1; i < l(tok); i += 2) {

    for (int j = 0; j < l(switcheroo_themap); j += 2) {

      S x = switcheroo_themap.get(j), y = switcheroo_themap.get(j+1);

      L<S> tokx = nlTok5(x), toky = nlTok5(y);

      switcheroo_matchReplace(tok, i, tokx, toky);

      switcheroo_matchReplace(tok, i, toky, tokx);

    }

  }

  ret join(map(f switcheroo_dropAsterisk, tok));

}

sS switcheroo_dropAsterisk(S t) {

  ret startsWith(t, "*") && l(t) > 1 ? substring(t, 1) : t;

}

static void switcheroo_matchReplace(L<S> tok, int i, L<S> tokx, L<S> toky) {

  //printFormat("Matching * * *", i, get(tok, i), tokx);

  if (switcheroo_tokRegionMatch(tok, i, tokx)) {

    //printFormat("Replacing * *", tokx, toky);

    for (int j = 0; j*2+1 < l(tokx); j++)

      tok.set(i+j*2, "*" + toky.get(1+j*2));

  }

}

static bool switcheroo_tokRegionMatch(L<S> tok, int i, L<S> tokx) {

  for (int j = 0; j*2+1 < l(tokx); j++)

    if (!eqic(get(tok, i+j*2), get(tokx, 1+j*2)))

      ret false;

  ret true;

}