Mixed set
Position on the chart
Variation applied the wrong way, a DR called a fix, a position line called a position.
Drawn across the whole group, leaning towards the topics you get wrong most, as far as the questions written for those topics allow. Expect it to feel harder than a single-topic drill — that difficulty is what makes it stick. Every visit draws a different set.
Dealing your set
Rather take them one topic at a time? All topic drills.