Kata

I'm sorry, but the second and third examples don't make much sense. | | and _ |_ |_|

are both valid and clear numbers that both utilize the 'c' segment in their display, yet the 'c' segment is declared dead. The same goes for: _ _| _|

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These are all valid and clear displays that don't utilize the 'f' segment yet the 'f' is declared dead. In neither of these examples is the dead segment evident. Might I suggest that you either use different numbers or displays that clearly show a segment as dead or write the numbers that are supposed to be displayed to highlight what the actual issue is. (If there is something obvious that I am missing, please point it out.)