# c1
greeting = "hello " + \
    "world"  # c2
# c3

# c4
greeting = "hello " \
    + "world"  # c5
# c6

# c7
greeting = "hello " + \
    "world"  # c8
# c9

# c10
greeting = ("hello " +  # c11
    "world")  # c12
# c13

# c14
greeting = ("hello "  # c15
    + "world")  # c16
# c17

# c18
greeting = ("hello"  # c19
    +  # c20
    "world")  # c21
# c22

greeting = "hello " +  \
           "world"  # c23

greeting = ("hello " +  # c24
            "world")

greeting = ("hello " +  # c25
            "world")