public static void main ( String [ ] args ) {
  Scanner sc = new Scanner ( System . in ) ;
  int t = sc . nextInt ( ) ;
  while ( t -- > 0 ) {
    int px = sc . nextInt ( ) ;
    int py = sc . nextInt ( ) ;
    String s = sc . next ( ) ;
    int x = 0 , y = 0 ;
    char ch = ' ' , ch2 = ' ' ;
    char ch3 = ' ' ;
    if ( px > 0 ) ch = 'R' ;
    else ch = 'L' ;
    if ( py > 0 ) ch2 = 'U' ;
    else ch2 = 'D' ;
    for ( int i = 0 ;
    i < s . length ( ) ;
    i ++ ) {
      ch3 = s . charAt ( i ) ;
      if ( ch3 == ch ) x += 1 ;
      if ( ch3 == ch2 ) y += 1 ;
    }
    if ( ( Math . abs ( px ) <= x ) && ( Math . abs ( py ) <= y ) ) System . out . println ( "YES" ) ;
    else System . out . println ( "NO" ) ;
  }
}

public static void main ( String [ ] args ) { Scanner sc = new Scanner ( System . in ) ; int t = sc . nextInt ( ) ; while ( t -- > 0 ) { int px = sc . nextInt ( ) ; int py = sc . nextInt ( ) ; String s = sc . next ( ) ; int x = 0 , y = 0 ; char ch = ' ▁ ' , ch2 = ' ▁ ' ; char ch3 = ' ▁ ' ; if ( px > 0 ) ch = ' R ' ; else ch = ' L ' ; if ( py > 0 ) ch2 = ' U ' ; else ch2 = ' D ' ; for ( int i = 0 ; i < s . length ( ) ; i ++ ) { ch3 = s . charAt ( i ) ; if ( ch3 == ch ) x += 1 ; if ( ch3 == ch2 ) y += 1 ; } if ( ( Math . abs ( px ) <= x ) && ( Math . abs ( py ) <= y ) ) System . out . println ( " YES " ) ; else System . out . println ( " NO " ) ; } }
(method_declaration (modifiers) type: (void_type) name: (identifier) parameters: (formal_parameters (formal_parameter type: (array_type element: (type_identifier) dimensions: (dimensions)) name: (identifier))) body: (block (local_variable_declaration type: (type_identifier) declarator: (variable_declarator name: (identifier) value: (object_creation_expression type: (type_identifier) arguments: (argument_list (field_access object: (identifier) field: (identifier)))))) (local_variable_declaration type: (integral_type) declarator: (variable_declarator name: (identifier) value: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list)))) (while_statement condition: (parenthesized_expression (binary_expression left: (update_expression (identifier)) right: (decimal_integer_literal))) body: (block (local_variable_declaration type: (integral_type) declarator: (variable_declarator name: (identifier) value: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list)))) (local_variable_declaration type: (integral_type) declarator: (variable_declarator name: (identifier) value: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list)))) (local_variable_declaration type: (type_identifier) declarator: (variable_declarator name: (identifier) value: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list)))) (local_variable_declaration type: (integral_type) declarator: (variable_declarator name: (identifier) value: (decimal_integer_literal)) declarator: (variable_declarator name: (identifier) value: (decimal_integer_literal))) (local_variable_declaration type: (integral_type) declarator: (variable_declarator name: (identifier) value: (character_literal)) declarator: (variable_declarator name: (identifier) value: (character_literal))) (local_variable_declaration type: (integral_type) declarator: (variable_declarator name: (identifier) value: (character_literal))) (if_statement condition: (parenthesized_expression (binary_expression left: (identifier) right: (decimal_integer_literal))) consequence: (expression_statement (assignment_expression left: (identifier) right: (character_literal))) alternative: (expression_statement (assignment_expression left: (identifier) right: (character_literal)))) (if_statement condition: (parenthesized_expression (binary_expression left: (identifier) right: (decimal_integer_literal))) consequence: (expression_statement (assignment_expression left: (identifier) right: (character_literal))) alternative: (expression_statement (assignment_expression left: (identifier) right: (character_literal)))) (for_statement init: (local_variable_declaration type: (integral_type) declarator: (variable_declarator name: (identifier) value: (decimal_integer_literal))) condition: (binary_expression left: (identifier) right: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list))) update: (update_expression (identifier)) body: (block (expression_statement (assignment_expression left: (identifier) right: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list (identifier))))) (if_statement condition: (parenthesized_expression (binary_expression left: (identifier) right: (identifier))) consequence: (expression_statement (assignment_expression left: (identifier) right: (decimal_integer_literal)))) (if_statement condition: (parenthesized_expression (binary_expression left: (identifier) right: (identifier))) consequence: (expression_statement (assignment_expression left: (identifier) right: (decimal_integer_literal)))))) (if_statement condition: (parenthesized_expression (binary_expression left: (parenthesized_expression (binary_expression left: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list (identifier))) right: (identifier))) right: (parenthesized_expression (binary_expression left: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list (identifier))) right: (identifier))))) consequence: (expression_statement (method_invocation object: (field_access object: (identifier) field: (identifier)) name: (identifier) arguments: (argument_list (string_literal)))) alternative: (expression_statement (method_invocation object: (field_access object: (identifier) field: (identifier)) name: (identifier) arguments: (argument_list (string_literal)))))))))