Options (newline-separated):
A B C

Votes (newline-separated).
Each vote is one of the following:
1. Comma-separated options in decreasing preference order.
2. Comma-separated option:weight entries.
(Caution: if specifying weights, 2 votes will have equal say iff the sum of weights is the same for each of them)
A, B, C A:5, C:4, B:1 B, A, C