State the date (or dates) on which a "large" company would be required to settle its corporation tax liability for each of the following accounting periods:

(a) the eleven months to 31 May 2018

(b) the eight months to 31 August 2017

(c) the four months to 30 April 2018

(d) the month to 31 January 2018.

Assume in each case that the company's tax liability for the period exceeds £10,000 and that the company was also large in the previous 12 months.