delete lines

[antar2]

I am new in python and I have the following problem:

Suppose I have a list with words of which I want to remove each time
the words in the lines below item1 and above item2:

item1
a
b
item2
c
d
item3
e
f
item4
g
h
item1
i
j
item2
k
l
item3
m
n
item4
o
p

I did not find out how to do this:

Part of my script was

f = re.compile("item\[1\]\:")
g = re.compile("item\[2\]\:")
for i, line in enumerate(list1):
		f_match = f.search(line)
		g_match = g.search(line)
		if f_match:
			if g_match:
				if list1[i] > f_match:
					if list1[i] < g_match:
						del list1[i]


But this does not work

If someone can help me, thanks!