hi :

I have a simple question to ask tutors:

list A :

a = [10,15,18,20,25,30,40]

I want to print
10 15 (first two elements)
16 18 (16 is last number +1)
19 20
21 25
26 30
31 40

>>> fx = a[0]
>>> fy = a[1]
>>> b = a[2:]
>>> ai = iter(b)
>>> last = ai.next()
>>> for j in ai:
...     print fy+1,last
...     last = j
...
16 18
16 20
16 25
16 30


can any one help please. 

thank you 

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