1 a -> 1a; 1. a) -> 1a; 2.1 stays 2.1. Spaces go, case folds, and the dots that are punctuation rather than sub-numbering are dropped — so the same question referred to as "1. a)" in the answer and "a." in the question list gets the same key.
1 a
1a
1. a)
2.1
1 a->1a;1. a)->1a;2.1stays2.1. Spaces go, case folds, and the dots that are punctuation rather than sub-numbering are dropped — so the same question referred to as "1. a)" in the answer and "a." in the question list gets the same key.