}

	// The list of symbols for the move-to-front transform is taken from
	// the previously decoded symbol bitmap.
	symbols := make([]byte, numSymbols)
	nextSymbol := 0
	for i := 0; i < 256; i++ {
		if symbolPresent[i] {
			symbols[nextSymbol] = byte(i)
			nextSymbol++
		}
	}
	mtf := newMTFDecoder(symbols)

	numSymbols += 2 // to account for RUNA and RUNB symbols
	huffmanTrees := make([]huffmanTree, numHuffmanTrees)