Look deeper in a list

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examples/lists/string_deeper.py

x = ['abcd', 'efgh']
print(x)          # ['abcd', 'efgh']

print(x[0:1])     # ['abcd']
print(x[0])       # 'abcd'

print(x[0][0])    # a
print(x[0][1])    # b
print(x[0][0:2])  # ab