
Martha and John IV are obviously related through Matilda, who is the knot individual because she ties a "knot" of relationship between Martha and John IV. Under the Knot System, Martha's direct line that is depicted above would be identified as her Ascent List 13. John IV's line would be his Ascent List 17.
These two ascent lists are combined, with a decimal point as separation, to form the KinCode element 13.17  a combination that looks like an ordinary number (an integer + fraction) but is not. Recalling that the form for expressing the KinCode element is a.b, one could verbally read this KinCode element 13.17 as: "The ancestor of the proband, Martha, at position a (13) is the same individual as the ancestor of her relative, John IV, at position b (17)."
It is obvious that all ancestors to C are also common ancestors to A and B. However, only C needs to be considered when numerically describing the basic relationship between A and B, because C is the common ancestor closest to the proband A and the related individual B.
For all practical purposes, the KinCode elements can be treated as real numbers capable of being compared and sorted  as long as one precaution is observed. For all KinCode elements that have identical numbers to the left of the decimal point, the expressions to the right of the decimal point should all have the same number of digits. (Zeroes can be added to the right hand number to achieve this, but any added zero must appear immediately after the decimal point. Table 1 illustrates the point, to use KinCode elements 46.068 and 46.092 as examples: zeroes were added to each so that 68 and 92 would have the same number of digits as the fraction part of element 46.116). Experience has proved it practical, always, to have at least two digits to the right of the decimal point. This permits the ascent list to span more than five generations and accommodate most known descendant relations.

