101.   The casualty toll remained unclear.

102.   The casualty toll was still unclear.

103.   The final casualty toll was unknown.

104.   The crash produced the largest U.S. casualty toll of the anti-terror war.

105.   The differing casualty tolls could not immediately be reconciled.

106.   The exact casualty toll from the two-day offensive was unknown.

107.   The fighting has prevented aid workers from going outside to collect bodies and assess the casualty toll themselves.

108.   The fighting has prevented aid workers from going outside to try to collect bodies and assess the casualty toll themselves.

109.   The final casualty toll in the missile strike remained unclear.

110.   The friendly-fire accident produced the worst U.S. casualty toll of the war.