A.i=0 while i<=10: print(i) i+=1
B.i=10 while i>0: print(i) i-=1
C.for i in range(10): print(i)
D.for i in range(10, 0, -1): print(i)
A.[i[::-1] for i in lst]
B.[(i[1],i[0]) for i in lst]
C.[(v,k) for k,v in lst]
D.[i[1]+i[0] for i in lst]
A.for i in range(10,0): sum+=i
B.for i in range(1, 11): sum+=i
C.for i in range(10, 0, -1): sum+=i
D.for i in (10, 9, 8, 7, 6, 5, 4, 3, 2, 1): sum+=i