List append acting wierd : I'm new to Python 3, and when using 2d arrays, I can add these elements, but it won't let me call an element; it throws a 'list index out of range'

    a = []
    for i in range (0,10):
        x = str(input("insert player x"))
        blah.append([x,0])
    for i in range(0,10):
        bleh = blah[0,1]
this throws a 'list index out of range' error

any suggestions?
    
