Generated by SassMeister.com.

SassMeister-input.scss

// ----
// Sass (v3.3.4)
// Compass (v1.0.0.alpha.18)
// ----

$types: positive negative passive aggressive;
$length: length($types);
$type-width: 20px;

@while $length > 0 {
  .type-#{nth($types, $length)} {
    width: $type-width + $length;
  }
  $length: $length - 1;
}

SassMeister-output.css

.type-aggressive {
  width: 24px;
}

.type-passive {
  width: 23px;
}

.type-negative {
  width: 22px;
}

.type-positive {
  width: 21px;
}