The overlap was done based on Ubuntu Lucid LTS starting from BackTrack 5. This will cause the DFA to backtrack to find other accept states. This provides the player with shortcuts, useful for when they die or need to backtrack. The party cannot backtrack to a previous stage upon clearing one. SPAdes keeps a data structure to be able to backtrack all corrections or removals. When two Prytt troopers appear in their path, they backtrack to ensure their safety. Turkey won't backtrack in its struggle against Daesh [i.e., ISIL] by even one step. Words just spill out of her mouth too quickly and she has to backtrack. He would later backtrack his comments. However, he loses the ability to backtrack during a stage. His government was forced to backtrack on several initiatives in quick succession in 2019. The survivors are forced to backtrack into the cave. It cannot cross or backtrack along any Stix in progress. In principle, whenever the constraint store is unsatisfiable the algorithm could backtrack. One approach is to advance the scan after "<" and on encountering the "=", backtrack.