def ll_to_string(inputlist):
    """
    converts list of list to string with four whitespaces between each list element
    >>> ll_to_string([['REM', 'TEST', 'C1'], ['1', '-0.00146', '0.26814', '0.06351']])
    'REM   TEST   C1\\n1   -0.00146   0.26814   0.06351'
    """
    inputlist = [list(map(str, i)) for i in inputlist]
    newlist = []
    for i in inputlist:
        newlist.append('   '.join(i).rstrip())
    string = '\n'.join(newlist)
    return string