B'Innokentiy decides to change the password in the social net "Contact!", but he is too lazy to invent a new password by himself. That is why he needs your help. Innokentiy decides that new password should satisfy the following conditions: Your task is to help Innokentiy and to invent a new password which will satisfy all given conditions. The first line contains two positive integers n and k (2 xe2 x80 x89 xe2 x89 xa4 xe2 x80 x89n xe2 x80 x89 xe2 x89 xa4 xe2 x80 x89100, 2 xe2 x80 x89 xe2 x89 xa4 xe2 x80 x89k xe2 x80 x89 xe2 x89 xa4 xe2 x80 x89min(n, xe2 x80 x8926)) -- the length of the password and the number of distinct symbols in it. Pay attention that a desired new password always exists. Print any password which satisfies all conditions given by Innokentiy. In the first test there is one of the appropriate new passwords -- java, because its length is equal to 4 and 3 distinct lowercase letters a, j and v are used in it. In the second test there is one of the appropriate new passwords -- python, because its length is equal to 6 and it consists of 6 distinct lowercase letters. In the third test there is one of the appropriate new passwords -- phphp, because its length is equal to 5 and 2 distinct lowercase letters p and h are used in it. Pay attention the condition that no two identical symbols are consecutive is correct for all appropriate passwords in tests. '...