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At this point, one can start combining minterms with other minterms in adjacent groups (as in, we compare minterms in nth group with (n+1)th group). If two terms differ by only a single digit, that digit can be replaced with a dash indicating that the digit doesn't matter. Terms that can't be combined any more are marked with an asterisk ({{color|red|*}}). For instance <code>1000</code> and <code>1001</code> can be combined to give <code>100-</code>, indicating that both minterms imply the first digit is <code>1</code> and the next two are <code>0</code>.
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