·Each
 word exit recorded in the BP table:
 ·
 ·
 ·
 ·
 ·
 ·Upon
 transitioning from an exited word A
 to another B:
 ·Inject
 pointer to BP table entry for A
 into start state of B.  (This identifies the predecessor of B.)
 ·Propagate these pointers along with
 path-scores during Viterbi search
 ·At end of utterance,
 identify best exited word and trace back using predecessor pointers