def autopair(isleDict, wordList):
    '''
    Tests whether adjacent words are OOD or not
    
    It returns complete wordLists with the matching words replaced.
    Each match yields one sentence.
    
    e.g.
    red ball chaser
    would return
    [[red_ball chaser], [red ball_chaser]], [0, 1]
    
    if 'red_ball' and 'ball_chaser' were both in the dictionary
    '''
    
    newWordList = [("%s_%s" % (wordList[i], wordList[i + 1]), i)
                   for i in range(0, len(wordList) - 1)]
    
    sentenceList = []
    indexList = []
    for word, i in newWordList:
        if word in isleDict.data:
            sentenceList.append(wordList[:i] + [word, ] + wordList[i + 1:])
            indexList.append(i)
    
    return sentenceList, indexList