public static void main ( String [ ] args ) throws Exception {
  BufferedReader br = new BufferedReader ( new InputStreamReader ( System . in ) ) ;
  String input = br . readLine ( ) ;
  if ( input . equals ( "a" ) || input . equals ( "e" ) || input . equals ( "i" ) || input . equals ( "o" ) || input . equals ( "u" ) ) {
    System . out . println ( "vowel" ) ;
  }
  else {
    System . out . println ( "consonant" ) ;
  }
}

public static void main ( String [ ] args ) throws Exception { BufferedReader br = new BufferedReader ( new InputStreamReader ( System . in ) ) ; String input = br . readLine ( ) ; if ( input . equals ( " a " ) || input . equals ( " e " ) || input . equals ( " i " ) || input . equals ( " o " ) || input . equals ( " u " ) ) { System . out . println ( " vowel " ) ; } else { System . out . println ( " consonant " ) ; } }
(method_declaration (modifiers) type: (void_type) name: (identifier) parameters: (formal_parameters (formal_parameter type: (array_type element: (type_identifier) dimensions: (dimensions)) name: (identifier))) (throws (type_identifier)) body: (block (local_variable_declaration type: (type_identifier) declarator: (variable_declarator name: (identifier) value: (object_creation_expression type: (type_identifier) arguments: (argument_list (object_creation_expression type: (type_identifier) arguments: (argument_list (field_access object: (identifier) field: (identifier)))))))) (local_variable_declaration type: (type_identifier) declarator: (variable_declarator name: (identifier) value: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list)))) (if_statement condition: (parenthesized_expression (binary_expression left: (binary_expression left: (binary_expression left: (binary_expression left: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list (string_literal))) right: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list (string_literal)))) right: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list (string_literal)))) right: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list (string_literal)))) right: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list (string_literal))))) consequence: (block (expression_statement (method_invocation object: (field_access object: (identifier) field: (identifier)) name: (identifier) arguments: (argument_list (string_literal))))) alternative: (block (expression_statement (method_invocation object: (field_access object: (identifier) field: (identifier)) name: (identifier) arguments: (argument_list (string_literal))))))))