static void findNextWord ( char [ ] s , int m ) {
  m += 97 ;
  int n = s . length ;
  int i = s . length - 1 ;
  s [ i ] ++ ;
  while ( i >= 0 && i <= n - 1 ) {
    if ( s [ i ] >= m ) {
      s [ i ] = 'a' ;
      s [ -- i ] ++ ;
    }
    else if ( s [ i ] == s [ i - 1 ] || s [ i ] == s [ i - 2 ] ) {
      s [ i ] ++ ;
    }
    else {
      i ++ ;
    }
  }
  if ( i <= - 1 ) {
    System . out . println ( "-1" ) ;
  }
  else {
    System . out . println ( s ) ;
  }
}

static void findNextWord ( char [ ] s , int m ) { m += 97 ; int n = s . length ; int i = s . length - 1 ; s [ i ] ++ ; while ( i >= 0 && i <= n - 1 ) { if ( s [ i ] >= m ) { s [ i ] = ' a ' ; s [ -- i ] ++ ; } else if ( s [ i ] == s [ i - 1 ] || s [ i ] == s [ i - 2 ] ) { s [ i ] ++ ; } else { i ++ ; } } if ( i <= - 1 ) { System . out . println ( " - 1" ) ; } else { System . out . println ( s ) ; } }
(method_declaration (modifiers) type: (void_type) name: (identifier) parameters: (formal_parameters (formal_parameter type: (array_type element: (integral_type) dimensions: (dimensions)) name: (identifier)) (formal_parameter type: (integral_type) name: (identifier))) body: (block (expression_statement (assignment_expression left: (identifier) right: (decimal_integer_literal))) (local_variable_declaration type: (integral_type) declarator: (variable_declarator name: (identifier) value: (field_access object: (identifier) field: (identifier)))) (local_variable_declaration type: (integral_type) declarator: (variable_declarator name: (identifier) value: (binary_expression left: (field_access object: (identifier) field: (identifier)) right: (decimal_integer_literal)))) (expression_statement (update_expression (array_access array: (identifier) index: (identifier)))) (while_statement condition: (parenthesized_expression (binary_expression left: (binary_expression left: (identifier) right: (decimal_integer_literal)) right: (binary_expression left: (identifier) right: (binary_expression left: (identifier) right: (decimal_integer_literal))))) body: (block (if_statement condition: (parenthesized_expression (binary_expression left: (array_access array: (identifier) index: (identifier)) right: (identifier))) consequence: (block (expression_statement (assignment_expression left: (array_access array: (identifier) index: (identifier)) right: (character_literal))) (expression_statement (update_expression (array_access array: (identifier) index: (update_expression (identifier)))))) alternative: (if_statement condition: (parenthesized_expression (binary_expression left: (binary_expression left: (array_access array: (identifier) index: (identifier)) right: (array_access array: (identifier) index: (binary_expression left: (identifier) right: (decimal_integer_literal)))) right: (binary_expression left: (array_access array: (identifier) index: (identifier)) right: (array_access array: (identifier) index: (binary_expression left: (identifier) right: (decimal_integer_literal)))))) consequence: (block (expression_statement (update_expression (array_access array: (identifier) index: (identifier))))) alternative: (block (expression_statement (update_expression (identifier)))))))) (if_statement condition: (parenthesized_expression (binary_expression left: (identifier) right: (unary_expression operand: (decimal_integer_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 (identifier))))))))