hopping in a list

[Beema shafreen]

hi everybody,
              I have a created  list,  my code:

res_value = []
fh = open('test','r')
for line in fh.readlines():
        data = line.strip().split('\t')
        current_span = data[3].strip()
        probe = data[2].strip()
        length = data[4].strip()
        res_value.append(current_span)
        res_value.append(probe)
        res_value.append(length)
fh.close()
my result:

L = ['35', 'A_16_P21404055', '-59', '355', 'A_16_P21404056', '-57', '167',
'A_16_P03667375', '-59', '5006', 'A_16_P21404058', '-55', '-38',
'A_16_P21404059', '-57', '261', 'A_16_P03667376', '-59', '200',
'A_16_P21404061', '-58', '-43', 'A_16_P03667377', '-59', '308',
'A_16_P21404062', '-58', '67', 'A_16_P03667378', '-54', '226']

if i need to check  L[0] < L[3] and L[3]< L[5] and L[5]< L[7]....... and so
on...
if its less  then i have to add  L[0]+L[2]+L[3] and print the
values.........
how do i do it.....
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