  We establish that it is possible to extract accurate blockwise and bitwise
soft output from Guessing Codeword Decoding with minimal additional
computational complexity by considering it as a variant of Guessing Random
Additive Noise Decoding. Blockwise soft output can be used to control decoding
misdetection rate while bitwise soft output results in a soft-input soft-output
decoder that can be used for efficient iterative decoding of long, high
redundancy codes.
