Not Equal: Everything in this space must be different. The answer is 6-1, placed vertically; 6-3, placed horizontally; 5-0, placed horizontally; 1-4, placed vertically; 2-4, placed horizontally.
**MUST** avoid including redundant comments which are tautological or self-demonstating (e.g. cases where it is easily parsable what the code does at a glance or its function name giving sufficient information as to what the code does, so the comment does nothing other than waste user time)
，这一点在同城约会中也有详细论述
Some of these congates are cognate with only part of the word.
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