i = 0
while(i < 10):
    i = i +1
    print(i)
    
#print numbers from 7 to 19
print("numbers from 7-19")
i = 7
while(i <= 19):
    print (i)
    i += 1
print("")

#Even numbers between 12 and 20
print("Even numbers between 12 and20")
a = 13
while (a < 20):
    if a%2 == 0:
        print(a)
        a += 2
    else:
        a += 1
print("")
        
        