| PASS | "odd" becomes "2n+1" | |
| PASS | "even" becomes "2n" | |
| PASS | "1" becomes "1" | |
| PASS | "+1" becomes "1" | |
| PASS | "-1" becomes "-1" | |
| PASS | "5n" becomes "5n" | |
| PASS | "5N" becomes "5n" | |
| PASS | "+n" becomes "n" | |
| PASS | "n" becomes "n" | |
| PASS | "N" becomes "n" | |
| PASS | "+ n" becomes "parse error" | |
| PASS | "-n" becomes "-n" | |
| PASS | "-N" becomes "-n" | |
| PASS | "5n-5" becomes "5n-5" | |
| PASS | "+n-5" becomes "n-5" | |
| PASS | "n-5" becomes "n-5" | |
| PASS | "+ n-5" becomes "parse error" | |
| PASS | "-n-5" becomes "-n-5" | |
| PASS | "5n +5" becomes "5n+5" | |
| PASS | "5n -5" becomes "5n-5" | |
| PASS | "+n +5" becomes "n+5" | |
| PASS | "n +5" becomes "n+5" | |
| PASS | "+n -5" becomes "n-5" | |
| PASS | "+ n +5" becomes "parse error" | |
| PASS | "n 5" becomes "parse error" | |
| PASS | "-n +5" becomes "-n+5" | |
| PASS | "-n -5" becomes "-n-5" | |
| PASS | "-n 5" becomes "parse error" | |
| PASS | "5n- 5" becomes "5n-5" | |
| PASS | "5n- -5" becomes "parse error" | |
| PASS | "5n- +5" becomes "parse error" | |
| PASS | "-5n- 5" becomes "-5n-5" | |
| PASS | "+n- 5" becomes "n-5" | |
| PASS | "n- 5" becomes "n-5" | |
| PASS | "+ n- 5" becomes "parse error" | |
| PASS | "n- +5" becomes "parse error" | |
| PASS | "n- -5" becomes "parse error" | |
| PASS | "-n- 5" becomes "-n-5" | |
| PASS | "-n- +5" becomes "parse error" | |
| PASS | "-n- -5" becomes "parse error" | |
| PASS | "5n + 5" becomes "5n+5" | |
| PASS | "5n - 5" becomes "5n-5" | |
| PASS | "5n + +5" becomes "parse error" | |
| PASS | "5n + -5" becomes "parse error" | |
| PASS | "5n - +5" becomes "parse error" | |
| PASS | "5n - -5" becomes "parse error" | |
| PASS | "+n + 5" becomes "n+5" | |
| PASS | "n + 5" becomes "n+5" | |
| PASS | "+ n + 5" becomes "parse error" | |
| PASS | "+n - 5" becomes "n-5" | |
| PASS | "+n + +5" becomes "parse error" | |
| PASS | "+n + -5" becomes "parse error" | |
| PASS | "+n - +5" becomes "parse error" | |
| PASS | "+n - -5" becomes "parse error" | |
| PASS | "-n + 5" becomes "-n+5" | |
| PASS | "-n - 5" becomes "-n-5" | |
| PASS | "-n + +5" becomes "parse error" | |
| PASS | "-n + -5" becomes "parse error" | |
| PASS | "-n - +5" becomes "parse error" | |
| PASS | "-n - -5" becomes "parse error" | |
| PASS | "1 - n" becomes "parse error" | |
| PASS | "0 - n" becomes "parse error" | |
| PASS | "-1 + n" becomes "parse error" | |
| PASS | "2 n + 2" becomes "parse error" | |
| PASS | "- 2n" becomes "parse error" | |
| PASS | "+ 2n" becomes "parse error" | |
| PASS | "+2 n" becomes "parse error" | |