Repeating a pose

The format of my weekly life drawing group has changed. For one, there is no more tea. Sigh. because of this, the fixed timings are no longer fixed.  After break we used to have two twenty minute poses. Now the break is ten minutes and at no particular time, so it's a little more fluid. Today the consensus was to do a series of the same three poses three times.  Timings were 2, 5 and 15 minutes. Of course the poses weren't exactly the same.  The top drawing is 6 x 6 and was a 15 minute pose.  the two altered book pages (5 x 8) were each 5 minutes.  The bottom drawing 4.5 x 8.5 was another 15 minute pose.