хочу сравнить списки

[kate]

Fragment of code


for maximum in listy:
print(maximum)


output:
[[0.352, 19, 'J'], [0.36, 19, 'J'], [0.627, 7, '7'], [0.412, 8, '8'], [0.258, 8, '8'], [0.317, 26, 'R'], [0.383, 20, 'K']]
[[0.389, 19, 'J'], [0.348, 19, 'J'], [0.499, 7, '7'], [0.369, 8, '8'], [0.365, 8, '8'], [0.289, 26, 'R'], [0.342, 20, 'K']]
[[0.384, 19, 'J'], [0.387, 19, 'J'], [0.282, 7, '7'], [0.239, 8, '8'], [0.25, 8, '8'], [0.256, 26, 'R'], [0.357, 20, 'K']]
[[0.391, 19, 'J'], [0.379, 19, 'J'], [0.458, 7, '7'], [0.235, 8, '8'], [0.289, 8, '8'], [0.275, 26, 'R'], [0.378, 20, 'K']]
[[0.401, 19, 'J'], [0.462, 7, '7'], [0.422, 19, 'J'], [0.287, 8, '8'], [0.271, 8, '8'], [0.286, 26, 'R'], [0.377, 20, 'K']]
[[0.382, 19, 'J'], [0.35, 19, 'J'], [0.517, 7, '7'], [0.36, 8, '8'], [0.259, 8, '8'], [0.331, 26, 'R'], [0.36, 20, 'K']]
[[0.391, 19, 'J'], [0.366, 19, 'J'], [0.299, 7, '7'], [0.234, 8, '8'], [0.269, 8, '8'], [0.239, 26, 'R'], [0.3, 20, 'K']]


хочу сравнить каждый список из списка listy по буквам
и выделить варианты:
J, J, '7, '8, '8, 'R, 'K' и тд
как вы видите с 7 списков есть два варината которые повтярються 6 и 1 раз.
Заранее спасиб