3~15자의 영문 소문자와 숫자, 빼기(-), 밑줄(_), 마침

3~15자의 영문 소문자와 숫자, 빼기(-), 밑줄(_), 마침표(.)만 사용할 수 있습니다. (단, .은 처음과 끝에 사용불가, 숫자만 사용불가

Results (English) 1:

English lowercase letters and digits of 3-15, subtract (-), underscore (_), a period (.) You can only use. (However, at the end of the beginning, number is disabled

Results (English) 2:

3-15 characters lowercase letters, numbers and minus (-), underscore (_), you can only use a period (.). (However, it can not be used at the beginning and end, but the number can not be used

Results (English) 3:

3, 15, the english lowercase letters and numbers, a minus (-) and transverse (_), conclusion (.) can only be used. (however, the beginning and the end. the use of fire, the fire use