The minimum length checksum field should be 4*4 matrix. for our data, two dimensional (even) parity: 1 1 1 0 1 0 1 1 0 0 1 0 0 1 0 1 1 0 1 1 1 1 0 0 0 note: two‐dim parity = generalization of the simple (one‐dim) parity scheme: 1. form an mxn matrix of bits, then.2. add a (even or odd) parity bit to each row and to each column.