Every knot is pass-equivalent to either the unknot or the trefoil; these two knots are not pass-equivalent and additionally, the right- and left-handed trefoils are pass-equivalent.
Trefoil knot | knot | 7₄ knot | Turk's head knot | Invariant theory | Cinquefoil knot | Rustic Shoulder-knot | Knot's Landing | Constrictor knot | Celtic knot | ARF | True lover's knot | The Other 'Arf | The logo of the Ontario Crafts Council, designed by Debbie Adams of Adams + Associates Design Consultants. Knot symbol designed by Burton Kramer | The ''epankylotos brokhos'' or the modern Tom fool's knot | Taubes's Gromov invariant | Slip knot | Rost invariant | root-knot nematode | Reef knot | Red Knot | red knot | Overhand knot | Loop-invariant code motion | Knot (unit) | Knot | invariant theory | Hungerford knot | Gordian Knot | Blood Knot |