#l=[10,20,30,40,50]
#i=0
# while i<len(l):
#     print(l[i])
#     i+=1
# print("####################")
# for i in l:
#     print(i)
#########################
l2=["A","B","C","D","E"]
i=0
len= len(l2)
for i in range(len):
    print("{} is char present at +ve index {} and -ve index {}".format(l2[i],i,i-len))