“…East_ptr : [1,3,5,7,9,11,13,15] then West_ptr := i -1 Else if i in [4,6,12,14] -------------------------------------------------------------- -------------------------------------------------------------- ------------------------------ -------------------------------------------------------------------' ---------------------------------------------------* -------------------------------------------------------------- -------------------------------------------------------------- , 4, 5, 8, 9, 12, 13] then South_ptr := i + 2 Else if i in [2,3,6,7] then South_ptr : [2,3,6,7,10,11,14,15] then North_ptr := i -2 Else if i in [8,9,12,13] then…”