A subset of characters derived from the alphabet, often used to specify a range or selection of letters.

वर्णमाला के अक्षरों का उपसमूह

English Usage: The password must include at least one alphabetic character subset.

Hindi Usage: पासवर्ड में कम से कम एक वर्णमाला उपसमूह शामिल होना चाहिए।