BEGIN
class
ensure
nil
self
when
END
def
false
not
super
while
alias
defined?
for
or
then
yield
and
do
if
redo
true
__LINE__
begin
else
in
rescue
undef
__FILE__
break
elsif
module
retry
unless
__ENCODING__
case
end
next
return
until
BasicObject
Object
ARGF.class
Array
Binding
Dir
Encoding
Encoding::Converter
Enumerator
Enumerator::ArithmeticSequence
Enumerator::Chain
Enumerator::Lazy
Enumerator::Yielder
FalseClass
Fiber
File::Stat
Hash
IO
File
MatchData
Method
Module
Class
NilClass
Numeric
Complex
Float
Integer
Rational
ObjectSpace::WeakMap
Proc
Process::Status
Random
Range
Regexp
RubyVM
RubyVM::AbstractSyntaxTree::Node
RubyVM::InstructionSequence
String
Struct
Process::Tms
Symbol
Thread
Thread::Backtrace::Location
Thread::ConditionVariable
Thread::Mutex
Thread::Queue
Thread::SizedQueue
ThreadGroup
Time
TracePoint
TrueClass
UnboundMethod
Comparable
Enumerable
Errno
File::Constants
FileTest
GC
GC::Profiler
IO::WaitReadable
IO::WaitWritable
Kernel
Marshal
Math
ObjectSpace
Process
Process::GID
Process::Sys
Process::UID
RubyVM::AbstractSyntaxTree
RubyVM::MJIT
Signal
Warning
ARGF
ENV
main