CODE EXAMPLE FOR PYTHON

get list values in b/w indexes python

result = []
sublist = []

separators = ('COMMENT', 'BORDER')
mylist = ['ABC', 'COMMENT', 'YES', 'YES', 'NO', '123', 'COMMENT','GONOW','MAKE','COMMENT', 'YES','COMMENT', 'BORDER', 'FOO', '123']

for x in mylist:
    if x in separators:
        if sublist:
            result.append(sublist)
        sublist = []
    else:
        sublist.append(x)
result.append(sublist)

print (result)