21.   While both government leaders and the unions say their alliance is not at risk, they engaged in an acrimonious exchange in the run-up to the strike.

22.   While both government and the unions both say their alliance is not at risk, they have engaged in an acrimonious exchange in the buildup to the strike.

23.   Chryst warned Safin, provoking an acrimonious exchange between the pair.

24.   The move led to acrimonious exchanges between the opposition parties and was fiercely condemned by Tory Euro-sceptics.