Come on Dozy,
you can do better than that.
From FCOM A 330/340
In certain failure cases, such as the loss of VS1g computation or the loss of two ADRs, the longitudinal static stability cannot be restored at low speed. In the case of a loss of three ADRs, it cannot be restored at high speed.
AF447 Final report:
The flight control law changed from normal to alternate at about 2 h 10 min 05. The alternate law was 2B and it did not change again thereafter. Due to the rejection of the three ADR by the flight control computers (PRIM), the abnormal attitudes law could only have been triggered for criteria relating to inertial parameters, but these conditions were never met.
There was no low speed stability function available in Alt 2b. A neutral stick would not have led to a reduction in trim. With the kind of tripple ADR failure Direct Law should have latched and thus disabling autotrim, but this did not happen as all three ADR's were rejected simultaneously.
But i'm not going to go through this again after all these years.