(module
 (type $0 (func))
 (memory $0 256 256)
 (func $c (type $0)
  (call $c)
  (call $c)
  (call $c)
 )
 (func $b (type $0)
  (call $b)
  (call $b)
 )
 (func $a (type $0)
  (call $a)
 )
)