// Check whether we have leftover data in the buffer
		if len(ctx.input) > 0 {
			readCount = copy(output, ctx.input)

			// Check whether we still have leftover data in the buffer :)
			if readCount < len(ctx.input) {
				copy(ctx.input[:readCount], ctx.input[readCount:])
				ctx.input = ctx.input[:readCount]
				ctx.input = ctx.input[:copy(ctx.input, ctx.input[readCount:])]
			}
			return readCount, nil
		}

		// This is single-iteration only but it is fine according to io.Reader's contract ?!
		// TODO - read all bytes from a block based on the hamming weight of the flag
		// and just shuffle them for predictions instead of bite-sized reads ;)