 The planned codes subtest contains two pages, each with a distinct set of codes arranged in seven rows and eight columns.At the top of each page is a legend that indicates how letters relate to simple codes (e.g., A = OX; B = XX; C = OO).In the planned connections (a variation of Trails test) subtest the child is instructed to connect numbers in sequence that appear in a quasi-random order (e.g., 1–2–3, etc.