91.   This year, he changed his strategy, going to the front and blocking the wind for the runners behind him, and the strategy backfired.

92.   But the strategy could backfire if the Bosnian Serbs refuse to respect the agreement and continue mount even a rear-guard action to fight it.

93.   But the strategy backfired with a by-election loss in late March.

94.   Polls suggested his new aggressive strategy had backfired.

95.   That strategy apparently backfired.