foo 1

foo bar 1

foo 1 if bar 2

foo 1 unless bar 2

foo 1 while bar 2

foo 1 until bar 2

foo 1 rescue bar 2

foo[bar 1]

foo 1 and bar 2

foo 1 or bar 2

not foo 1

foo = bar = baz 1

def foo = bar 1

1.foo 2

1.foo.bar 2

1.foo[2].bar 3

1.foo(2).bar 3

1.foo(&2).bar 3

!foo 1 and !bar 2

!foo 1 or !bar 2

not !foo 1