[3]: 38 Likely candidates for this type of ambitransitives include those where an action can be described in general terms or with respect to a specific patient.
[1]: 20 English has bend, break, burn, burst, change, cool, enter, extend, fall, frighten, grow, hurry, melt, move, open, spill, stretch, trip, turn, twist, and many other verbs.
[4]: 19 For some of these verbs, native speakers' intuition tells us these words are primarily transitive and secondarily intransitive (such as smash or extend).
These verbs behave like ambitransitives, but the intransitive form requires a clitic pronoun that usually serves also for reflexive constructions.
Ambiguity may arise between these and true reflexive forms, especially when the intransitive subject is animate (and therefore a possible agent).