Limit MasterWord skip:
Equivalent matrix will have a MasterWord skip not greater than the MasterWord skip of the current matrix.
Limit SlaveWord f² (intra-ELS distance) :
Equivalent matrix will have a SlaveWord f² not greater than the SlaveWord f² of the current matrix.
Disable sharing letters :
Equivalent matrix will not share letters between ELS.
 
Take snapshots of the matrices :
Take a snapshot when an equivalent matrix will be found.